Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 在 l2tp 子系统中，存在争用条件导致的可能的释放后使用。这可能会导致本地权限提升，并需要系统执行权限。利用不需要用户交互。Product：AndroidVersions：Android kernelAndroid ID：A-152409173（CVE-2020-27067）

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

遠端 OracleVM 系統缺少可解決安全性更新的必要修補程式：

  - 在 4.15 之前的 Linux 核心的 fs/ocfs2/cluster/nodemanager.c 中，本機使用者可能會因為未使用必要的 mutex 而引致拒絕服務 (NULL 指標解除參照和錯誤)。(CVE-2017-18216)

  - pppol2tp_connect 中可能存在記憶體損毀，這是釋放後使用所致。這可能會導致本機權限提升，並需要系統執行權限。不需使用者互動即可惡意利用。產品：Android。版本：Android 核心。Android ID：A-38159931。(CVE-2018-9517)

  - Linux 核心 CIFS 實作 4.9.0 容易受到目錄項目清單中的相對路徑插入影響。(CVE-2019-10220)

  - 在 Linux 核心 5.3.11 及之前版本中，drivers/net/wireless/realtek/rtlwifi/usb.c 中的 rtl_usb_probe() 函式存在兩個記憶體洩漏弱點，攻擊者藉此可引致拒絕服務 (記憶體消耗)， 亦稱 CID-3f9361695113。(CVE-2019-19063)

  - 在 Linux 核心 5.3.11 及之前版本中，drivers/scsi/bfa/bfad_attr.c 中的 bfad_im_get_stats() 函式存在記憶體洩漏，這會允許攻擊者透過觸發 bfa_port_get_stats() 失敗情形引致拒絕服務 (記憶體消耗)，亦稱 CID-0e62395da2bd。(CVE-2019-19066)

  - 在 Linux 核心 5.3.11 及之前版本中，drivers/net/wireless/ath/ath9k/wmi.c 中的 ath9k_wmi_cmd() 函式有一個記憶體洩漏弱點，攻擊者藉此可導致拒絕服務 (記憶體消耗)， 亦即 CID-728c1e2a05e4。
    (CVE-2019-19074)

  - perf_event_open() 中存在爭用情形，本機攻擊者可藉此弱點透過 setuid 程式洩漏敏感資料。
    由於在 ptrace_may_access() 呼叫時沒有控制相關鎖定 (尤其是 cred_guard_mutex)，特定目標工作可能在 perf_event_alloc() 確實附加前執行帶有 setuid 執行的 execve() 系統呼叫，讓攻擊者可以繞過 ptrace_may_access() 檢查和在具有特殊權限的 execve() 呼叫時在 install_exec_creds() 中執行的 perf_event_exit_task (最新) 呼叫。此問題會影響 4.8 版之前的核心版本。(CVE-2019-3901)

  - 在 5.6.11 之前的 Linux 核心中發現一個問題。如果合併作業失敗，drivers/md/bcache/btree.c 中的 btree_gc_coalesce 有鎖死問題。(CVE-2020-12771)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼。

远程 OracleVM 系统缺少解决关键安全更新的必要补丁：

  - 在 Linux 内核 4.15 之前的 fs/ocfs2/cluster/nodemanager.c 中，由于未使用所需的互斥体，本地用户可造成拒绝服务（空指针取消引用和错误）。(CVE-2017-18216)

  - pppol2tp_connect 中可能存在内存损坏，这是释放后使用所致。这可能会导致本地权限提升，并需要系统执行权限。不需用户交互即可恶意利用。产品：Android。版本：Android 内核。Android ID：A-38159931。(CVE-2018-9517)

  - Linux 内核 CIFS 实现版本 4.9.0 容易受到目录条目列表中相对路径注入的影响。(CVE-2019-10220)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/net/wireless/realtek/rtlwifi/usb.c 中的 rtl_usb_probe() 函数中存在两项内存泄漏，攻击者可利用此漏洞，造成拒绝服务（内存消耗），亦即 CID-3f9361695113。(CVE-2019-19063)

  - 在 Linux 内核 5.3.11 及之前版本中，drivers/scsi/bfa/bfad_attr.c 中的 bfad_im_get_stats() 函数中存在内存泄漏，攻击者可利用此漏洞，通过触发 bfa_port_get_stats() 失败，造成拒绝服务（内存消耗），亦即 CID-0e62395da2bd。(CVE-2019-19066)

  - 在 5.3.11 及之前版本的 Linux 内核中，drivers/net/wireless/ath/ath9k/wmi.c 的 ath9k_wmi_cmd() 函数中存在内存泄漏，攻击者可利用此漏洞造成拒绝服务（内存消耗），即 CID-728c1e2a05e4。
    (CVE-2019-19074)

  - 本地攻击者可利用 perf_event_open() 中的争用条件，泄漏来自 setuid 程序的敏感数据。
    由于在 ptrace_may_access() 调用期间没有相关锁定（尤其是 cred_guard_mutex），特定目标任务可能在 perf_event_alloc() 实际附加到其之前执行带有 setuid 执行的 execve() 系统调用，让攻击者绕过 ptrace_may_access() 检查和具有特殊权限的 execve() 调用期间在 install_exec_creds() 中执行的 perf_event_exit_task（当前）调用。此问题影响内核 4.8 之前版本。(CVE-2019-3901)

  - 在 Linux 内核 5.6.11 及之前版本中发现一个问题。合并操作失败时，drivers/md/bcache/btree.c 中的 btree_gc_coalesce 存在死锁。(CVE-2020-12771)

请注意，Nessus 尚未测试这些问题，而是只依靠应用程序自我报告的版本号来判断。

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 在 l2tp 子系統中，可能因爭用情形而導致釋放後使用。這可能會導致需要系統執行權限的本機特權提升。惡意利用不需要使用者互動。產品：AndroidVersions：Android kernelAndroid ID：A-152409173 (CVE-2020-27067)

請注意，Nessus 依賴供應商報告的套件存在。

リモートの OracleVM システムに、セキュリティ更新に対処するために必要なパッチが、欠落しています :

  - 4.15以前のLinuxカーネルのfs/ocfs2/cluster/nodemanager.cでは、必要なmutexが使用されていないため、ローカルユーザーがサービス拒否（NULLポインターデリファレンスおよびBUG）を引き起こす可能性があります。（CVE-2017-18216）

  - pppol2tp_connect で、メモリ解放後使用 (Use After Free) によるメモリ破損の可能性があります。これにより、システム実行権限が必要なローカルでの権限昇格が引き起こされる可能性があります。悪用はユーザーの操作を必要としません。製品: Android。バージョン: Android カーネル。Android ID: A-38159931。(CVE-2018-9517)

  - LinuxカーネルCIFS実装のバージョン4.9.0は、ディレクトリエントリリストの相対パスインジェクションに対して脆弱です（CVE-2019-10220）。

  -5.3.11より前のLinuxカーネルのdrivers/net/wireless/realtek/rtlwifi/usb.cのrtl_usb_probe()関数の2つのメモリリークにより、攻撃者がサービス拒否（メモリ消費）を引き起こす可能性があります（別名CID-3f9361695113）。（CVE-2019-19063）

  -5.3.11までのLinuxカーネルのdrivers/scsi/bfa/bfad_attr.cのbfad_im_get_stats()関数におけるメモリリークにより、攻撃者がbfa_port_get_stats()の失敗をトリガーすることで、サービス拒否（メモリ消費）を引き起こす可能性があります。（別名CID-0e62395da2bd）。（CVE-2019-19066）

  -5.3.11までのLinuxカーネル内のdrivers/net/wireless/ath/ath9k/wmi.cのath9k_wmi_cmd（）関数のメモリリークにより、攻撃者がサービス拒否（メモリ消費）（別名CID-128c66429247）を引き起こすことができます。
    (CVE-2019-19074)

  - perf_event_open()の競合状態により、ローカルの攻撃者がsetuidプログラムから機密データを漏洩する可能性があります。
    ptrace_may_access()呼び出しの間、関連するロック（特にcred_guard_mutex）は保持されないため、perf_event_alloc()が実際にアタッチする前に、指定されたターゲットタスクがsetuid実行でexecve()システムコールを実行し、攻撃者が、権限のあるexecve()呼び出し中にinstall_exec_creds()で実行される、ptrace_may_access()チェックとperf_event_exit_task(current)呼び出しをバイパスする可能性があります。この問題は、4.8より前のカーネルバージョンに影響します。（CVE-2019-3901）

  -以前5.6.11のLinuxカーネルで問題が発見されました。drivers/md/bcache/btree.c内のbtree_gc_coalesceで、一体化操作が失敗した場合にデッドロックが発生します。（CVE-2020-12771）

Nessus はこれらの問題をテストしておらず、代わりにアプリケーションの自己報告されたバージョン番号にのみ依存しています。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - l2tp サブシステムでは、競合状態による use-after-free の可能性があります。これにより、システム実行権限が必要なローカルでの権限昇格が引き起こされる可能性があります。悪用にユーザーの操作は必要ありません。製品：Androidバージョン：Android kernelAndroid ID：A-152409173（CVE-2020-27067）

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004244 advisory.

    In the l2tp subsystem, there is a possible use after free due to a race condition. This could lead to     local escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152409173

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The kernel package contains the Linux kernel (vmlinuz),     the core of any Linux operating system. The kernel     handles the basic functions of the operating system:
    memory allocation, process allocation, device input and     output, etc.Security Fix(es):An issue was discovered in     the Linux kernel before 5.11.3 when a webcam device     exists. video_usercopy in     drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak     for large arguments, aka     CID-fb18802a338b.(CVE-2021-30002)A flaw was found in     the JFS filesystem code. This flaw allows a local     attacker with the ability to set extended attributes to     panic the system, causing memory corruption or     escalating privileges. The highest threat from this     vulnerability is to confidentiality, integrity, as well     as system availability.(CVE-2020-27815)An out-of-bounds     (OOB) memory access flaw was found in x25_bind in     net/x25/af_x25.c in the Linux kernel. A bounds check     failure allows a local attacker with a user account on     the system to gain access to out-of-bounds memory,     leading to a system crash or a leak of internal kernel     information. The highest threat from this vulnerability     is to confidentiality, integrity, as well as system     availability.(CVE-2020-35519)There is a flaw reported     in drivers/gpu/drm/ nouveau/ nouveau_sgdma.c in     nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The     issue results from the lack of validating the existence     of an object prior to performing operations on the     object. An attacker with a local account with a root     privilege, can leverage this vulnerability to escalate     privileges and execute code in the context of the     kernel.(CVE-2021-20292)In     drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux     kernel through 5.11.8, the RPA PCI Hotplug driver has a     user-tolerable buffer overflow when writing a new     device name to the driver from userspace, allowing     userspace to write data to the kernel stack frame     directly. This occurs because add_slot_store and     remove_slot_store mishandle drc_name '\0' termination,     aka CID-cc7a0bb058b8.(CVE-2021-28972)A race condition     was discovered in get_old_root in fs/btrfs/ctree.c in     the Linux kernel through 5.11.8. It allows attackers to     cause a denial of service (BUG) because of a lack of     locking on an extent buffer before a cloning operation,     aka CID-dbcc7d57bffc.(CVE-2021-28964)An issue was     discovered in the Linux kernel before 5.11.7.
    usbip_sockfd_store in drivers/usb/usbip/stub_dev.c     allows attackers to cause a denial of service (GPF)     because the stub-up sequence has race conditions during     an update of the local and shared status, aka     CID-9380afd6df70.(CVE-2021-29265)A flaw was found in     the Linux kernel. A denial of service problem is     identified if an extent tree is corrupted in a crafted     ext4 filesystem in fs/ext4/extents.c in     ext4_es_cache_extent. Fabricating an integer overflow,     A local attacker with a special user privilege may     cause a system crash problem which can lead to an     availability threat.(CVE-2021-3428)BPF JIT compilers in     the Linux kernel through 5.11.12 have incorrect     computation of branch displacements, allowing them to     execute arbitrary code within the kernel context. This     affects arch/x86/ net/bpf_jit_comp.c and arch/x86/     net/bpf_jit_comp32.c.(CVE-2021-29154)A flaw was found     in the way memory resources were freed in the     unix_stream_recvmsg function in the Linux kernel when a     signal was pending. This flaw allows an unprivileged     local user to crash the system by exhausting available     memory. The highest threat from this vulnerability is     to system availability.(CVE-2021-20265)In the l2tp     subsystem, there is a possible use after free due to a     race condition. This could lead to local escalation of     privilege with System execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-152409173(CVE-2020-27067)A flaw was found in the Nosy     driver in the Linux kernel. This issue allows a device     to be inserted twice into a doubly-linked list, leading     to a use-after-free when one of these devices is     removed. The highest threat from this vulnerability is     to confidentiality, integrity, as well as system     availability.(CVE-2021-3483)kernel: memory leak in     llcp_sock_connect()(CVE-2020-25672)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the l2tp subsystem, there is a possible use after free due to a race condition. This could lead to     local escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152409173 (CVE-2020-27067)

Note that Nessus relies on the presence of the package as reported by the vendor.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The kernel package contains the Linux kernel (vmlinuz),     the core of any Linux operating system. The kernel     handles the basic functions of the operating system:
    memory allocation, process allocation, device input and     output, etc.Security Fix(es):In do_epoll_ctl and     ep_loop_check_proc of eventpoll.c, there is a possible     use after free due to a logic error. This could lead to     local escalation of privilege with no additional     execution privileges needed.(CVE-2020-0466)In the l2tp     subsystem, there is a possible use after free due to a     race condition. This could lead to local escalation of     privilege with System execution privileges     needed.(CVE-2020-27067)In the nl80211_policy policy of     nl80211.c, there is a possible out of bounds read due     to a missing bounds check. This could lead to local     information disclosure with System execution privileges     needed.(CVE-2020-27068)In audit_free_lsm_field of     auditfilter.c, there is a possible bad kfree due to a     logic error in audit_data_to_entry. This could lead to     local escalation of privilege with no additional     execution privileges needed.(CVE-2020-0444)In various     methods of hid-multitouch.c, there is a possible out of     bounds write due to a missing bounds check. This could     lead to local escalation of privilege with no     additional execution privileges     needed.(CVE-2020-0465)Use-after-free vulnerability in     fs/block_dev.c in the Linux kernel before 5.8 allows     local users to gain privileges or cause a denial of     service by leveraging improper access to a certain     error field.(CVE-2020-15436)The Linux kernel before     version 5.8 is vulnerable to a NULL pointer dereference     in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
    _ports() that allows local users to cause a denial of     service by using the p->serial_in pointer which     uninitialized.(CVE-2020-15437)A flaw was found in the     Linux kernels implementation of MIDI, where an attacker     with a local account and the permissions to issue an     ioctl commands to midi devices, could trigger a     use-after-free. A write to this specific memory while     freed and before use could cause the flow of execution     to change and possibly allow for memory corruption or     privilege escalation.(CVE-2020-27786)Array index out of     bounds access when setting extended attributes on     journaling filesystems.(CVE-2020-27815)NULL-ptr deref     in the spk_ttyio_receive_buf2() function in     spk_ttyio.c(CVE-2020-27830)An issue was discovered in
    __split_huge_pmd in mm/huge_memory.c in the Linux     kernel before 5.7.5. The copy-on-write implementation     can grant unintended write access because of a race     condition in a THP mapcount check, aka     CID-c444eb564fb1.(CVE-2020-29368)An issue was     discovered in kmem_cache_alloc_bulk in mm/slub.c in the     Linux kernel before 5.5.11. The slowpath lacks the     required TID increment, aka     CID-fd4d9c7d0c71.(CVE-2020-29370)An issue was     discovered in romfs_dev_read in fs/romfs/storage.c in     the Linux kernel before 5.8.4. Uninitialized memory     leaks to userspace, aka     CID-bcf85fcedfdd.(CVE-2020-29371)A locking     inconsistency issue was discovered in the tty subsystem     of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)A locking issue was     discovered in the tty subsystem of the Linux kernel     through 5.9.13. drivers/tty/tty_jobctrl.c allows a     use-after-free attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)A slab-out-of-bounds     read in fbcon in the Linux kernel before 5.9.7 could be     used by local attackers to read privileged information     or potentially crash the kernel, aka CID-3c4e0dff2095.
    This occurs because KD_FONT_OP_COPY in     drivers/tty/vt/vt.c can be used for manipulations such     as font height.(CVE-2020-28974) An issue was discovered     in the Linux kernel through 5.9.1, as used with Xen     through 4.14.x. Guest OS users can cause a denial of     service (host OS hang) via a high rate of events to     dom0, aka CID-e99502f76271.(CVE-2020-27673)An issue was     discovered in drivers/accessibility/speakup/spk_ttyio.c     in the Linux kernel through 5.9.9. Local attackers on     systems with the speakup driver could cause a local     denial of service attack, aka CID-d41227544427. This     occurs because of an invalid free when the line     discipline is used more than once.(CVE-2020-28941)An     issue was discovered in the Linux kernel through 5.9.1,     as used with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel     removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL     pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized     device, aka CID-073d0552ead5.(CVE-2020-27675)A buffer     over-read (at the framebuffer layer) in the fbcon code     in the Linux kernel before 5.8.15 could be used by     local attackers to read kernel memory, aka     CID-6735b4632def.(CVE-2020-28915)A flaw was found in     the Linux kernel. A use-after-free memory flaw was     found in the perf subsystem allowing a local attacker     with permission to monitor perf events to corrupt     memory and possibly escalate privileges. The highest     threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-14351)A flaw in the way reply     ICMP packets are limited in the Linux kernel     functionality was found that allows to quickly scan     open UDP ports. This flaw allows an off-path remote     user to effectively bypassing source port UDP     randomization. The highest threat from this     vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source     port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this     issue.(CVE-2020-25705)race condition in fg_console can     lead to use-after-free in     con_font_op.(CVE-2020-25668)use-after-free read in     sunkbd_reinit in     drivers/input/keyboard/sunkbd.c.(CVE-2020-25669)A flaw     was found in the way RTAS handled memory accesses in     userspace to kernel communication. On a locked down     (usually due to Secure Boot) guest system running on     top of PowerVM or KVM hypervisors (pseries platform) a     root like local user could use this flaw to further     increase their privileges to that of a running     kernel.(CVE-2020-27777)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004034 advisory.

    In the l2tp subsystem, there is a possible use after free due to a race condition. This could lead to     local escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152409173

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001578 advisory.

    In the l2tp subsystem, there is a possible use after free due to a race condition. This could lead to     local escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152409173

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-147802478References: Upstream kernel(CVE-2020-0466)

  - In the l2tp subsystem, there is a possible use after     free due to a race condition. This could lead to local     escalation of privilege with System execution     privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-152409173(CVE-2020-27067)

  - In the nl80211_policy policy of nl80211.c, there is a     possible out of bounds read due to a missing bounds     check. This could lead to local information disclosure     with System execution privileges needed. User     interaction is not required for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-119770583(CVE-2020-27068)

  - In audit_free_lsm_field of auditfilter.c, there is a     possible bad kfree due to a logic error in     audit_data_to_entry. This could lead to local     escalation of privilege with no additional execution     privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-150693166References: Upstream     kernel(CVE-2020-0444)

  - In various methods of hid-multitouch.c, there is a     possible out of bounds write due to a missing bounds     check. This could lead to local escalation of privilege     with no additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-162844689References: Upstream kernel(CVE-2020-0465)

  - Use-after-free vulnerability in fs/block_dev.c in the     Linux kernel before 5.8 allows local users to gain     privileges or cause a denial of service by leveraging     improper access to a certain error     field.(CVE-2020-15436)

  - The Linux kernel before version 5.8 is vulnerable to a     NULL pointer dereference in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
    _ports() that allows local users to cause a denial of     service by using the p->serial_in pointer which     uninitialized.(CVE-2020-15437)

  - A flaw was found in the Linux kernels implementation of     MIDI, where an attacker with a local account and the     permissions to issue an ioctl commands to midi devices,     could trigger a use-after-free. A write to this     specific memory while freed and before use could cause     the flow of execution to change and possibly allow for     memory corruption or privilege     escalation.(CVE-2020-27786)

  - No description is available for this     CVE.(CVE-2020-27815)

  - NULL-ptr deref in the spk_ttyio_receive_buf2() function     in spk_ttyio.c(CVE-2020-27830)

  - An issue was discovered in __split_huge_pmd in     mm/huge_memory.c in the Linux kernel before 5.7.5. The     copy-on-write implementation can grant unintended write     access because of a race condition in a THP mapcount     check, aka CID-c444eb564fb1.(CVE-2020-29368)

  - An issue was discovered in kmem_cache_alloc_bulk in     mm/slub.c in the Linux kernel before 5.5.11. The     slowpath lacks the required TID increment, aka     CID-fd4d9c7d0c71.(CVE-2020-29370)

  - An issue was discovered in romfs_dev_read in     fs/romfs/storage.c in the Linux kernel before 5.8.4.
    Uninitialized memory leaks to userspace, aka     CID-bcf85fcedfdd.(CVE-2020-29371)

  - A locking inconsistency issue was discovered in the tty     subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)

  - A locking issue was discovered in the tty subsystem of     the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free     attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)

  - A slab-out-of-bounds read in fbcon in the Linux kernel     before 5.9.7 could be used by local attackers to read     privileged information or potentially crash the kernel,     aka CID-3c4e0dff2095. This occurs because     KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for     manipulations such as font height.(CVE-2020-28974)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x. Guest OS users     can cause a denial of service (host OS hang) via a high     rate of events to dom0, aka     CID-e99502f76271.(CVE-2020-27673)

  - An issue was discovered in     drivers/accessibility/speakup/spk_ttyio.c in the Linux     kernel through 5.9.9. Local attackers on systems with     the speakup driver could cause a local denial of     service attack, aka CID-d41227544427. This occurs     because of an invalid free when the line discipline is     used more than once.(CVE-2020-28941)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel     removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL     pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized     device, aka CID-073d0552ead5.(CVE-2020-27675)

  - A buffer over-read (at the framebuffer layer) in the     fbcon code in the Linux kernel before 5.8.15 could be     used by local attackers to read kernel memory, aka     CID-6735b4632def.(CVE-2020-28915)

  - A flaw was found in the Linux kernel. A use-after-free     memory flaw was found in the perf subsystem allowing a     local attacker with permission to monitor perf events     to corrupt memory and possibly escalate privileges. The     highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-14351)

  - A flaw in the way reply ICMP packets are limited in the     Linux kernel functionality was found that allows to     quickly scan open UDP ports. This flaw allows an     off-path remote user to effectively bypassing source     port UDP randomization. The highest threat from this     vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source     port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this     issue.(CVE-2020-25705)

  - No description is available for this     CVE.(CVE-2020-25668)

  - No description is available for this     CVE.(CVE-2020-25669)

  - A flaw was found in the way RTAS handled memory     accesses in userspace to kernel communication. On a     locked down (usually due to Secure Boot) guest system     running on top of PowerVM or KVM hypervisors (pseries     platform) a root like local user could use this flaw to     further increase their privileges to that of a running     kernel.(CVE-2020-27777)

  - kernel: perf_event_parse_addr_filter     memory(CVE-2020-25704)

  - Insufficient access control in the Linux kernel driver     for some Intel(R) Processors may allow an authenticated     user to potentially enable information disclosure via     local access.(CVE-2020-8694)

  - A flaw was found in the Linux kernel. A use-after-free     was found in the way the console subsystem was using     ioctls KDGKBSENT and KDSKBSENT. A local user could use     this flaw to get read memory access out of bounds. The     highest threat from this vulnerability is to data     confidentiality.(CVE-2020-25656)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - A flaw was found in the HDLC_PPP module of the Linux     kernel in versions before 5.9-rc7. Memory corruption     and a read overflow is caused by improper input     validation in the ppp_cp_parse_cr function which can     cause the system to crash or cause a denial of service.
    The highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-25643)

  - A flaw was found in the Linux kernel in versions before     5.9-rc7. Traffic between two Geneve endpoints may be     unencrypted when IPsec is configured to encrypt traffic     for the specific UDP port used by the GENEVE tunnel     allowing anyone between the two endpoints to read the     traffic unencrypted. The main threat from this     vulnerability is to data     confidentiality.(CVE-2020-25645)

  - Vulnerability Summary for     CVE-2020-12351(CVE-2020-12351)

  - Vulnerability Summary for     CVE-2020-12352(CVE-2020-12352)

  - Vulnerability Summary for     CVE-2020-24490(CVE-2020-24490)

  - A missing CAP_NET_RAW check in NFC socket creation in     net/nfc/rawsock.c in the Linux kernel before 5.8.2     could be used by local attackers to create raw sockets,     bypassing security mechanisms, aka     CID-26896f01467a.(CVE-2020-26088)

  - A flaw was found in the Linux kernel's implementation     of biovecs in versions before 5.9-rc7. A zero-length     biovec request issued by the block subsystem could     cause the kernel to enter an infinite loop, causing a     denial of service. This flaw allows a local attacker     with basic privileges to issue requests to a block     device, resulting in a denial of service. The highest     threat from this vulnerability is to system     availability.(CVE-2020-25641)

  - In skb_to_mamac of networking.c, there is a possible     out of bounds write due to an integer overflow. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-143560807(CVE-2020-0432)

  - A race condition between hugetlb sysctl handlers in     mm/hugetlb.c in the Linux kernel before 5.8.8 could be     used by local attackers to corrupt memory, cause a NULL     pointer dereference, or possibly have unspecified other     impact, aka CID-17743798d812.(CVE-2020-25285)

  - A flaw was found in the Linux kernel in versions from     2.2.3 through 5.9.rc5. When changing screen size, an     out-of-bounds memory write can occur leading to memory     corruption or a denial of service. This highest threat     from this vulnerability is to system     availability.(CVE-2020-14390)

  - A flaw was found in the Linux kernel before 5.9-rc4.
    Memory corruption can be exploited to gain root     privileges from unprivileged processes. The highest     threat from this vulnerability is to data     confidentiality and integrity.(CVE-2020-14386)

  - Insufficient input validation in i40e driver for     Intel(R) Ethernet 700 Series Controllers versions     before 7.0 may allow an authenticated user to     potentially enable a denial of service via local     access.(CVE-2019-0147)

  - A TOCTOU mismatch in the NFS client code in the Linux     kernel before 5.8.3 could be used by local attackers to     corrupt memory or possibly have unspecified other     impact because a size check is in fs/nfs/nfs4proc.c     instead of fs/nfs/nfs4xdr.c, aka     CID-b4487b935452.(CVE-2020-25212)

  - A flaw was found in the Linux kernel before 5.9-rc4. A     failure of the file system metadata validator in XFS     can cause an inode with a valid, user-creatable     extended attribute to be flagged as corrupt. This can     lead to the filesystem being shutdown, or otherwise     rendered inaccessible until it is remounted, leading to     a denial of service. The highest threat from this     vulnerability is to system     availability.(CVE-2020-14385)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-111893654References: Upstream     kernel(CVE-2020-0404)

  - The rbd block device driver in drivers/block/rbd.c in     the Linux kernel through 5.8.9 used incomplete     permission checking for access to rbd devices, which     could be leveraged by local attackers to map or unmap     rbd block devices, aka     CID-f44d04e696fe.(CVE-2020-25284)

  - A memory out-of-bounds read flaw was found in the Linux     kernel before 5.9-rc2 with the ext3/ext4 file system,     in the way it accesses a directory with broken     indexing. This flaw allows a local user to crash the     system if the directory exists. The highest threat from     this vulnerability is to system     availability.(CVE-2020-14314)

  - A flaw null pointer dereference in the Linux kernel     cgroupv2 subsystem in versions before 5.7.10 was found     in the way when reboot the system. A local user could     use this flaw to crash the system or escalate their     privileges on the system.(CVE-2020-24394)

  - A flaw was found in the Linux kernel's implementation     of the invert video code on VGA consoles when a local     attacker attempts to resize the console, calling an     ioctl VT_RESIZE, which causes an out-of-bounds write to     occur. This flaw allows a local user with access to the     VGA console to crash the system, potentially escalating     their privileges on the system. The highest threat from     this vulnerability is to data confidentiality and     integrity as well as system     availability.(CVE-2020-14331)

  - The Linux kernel, as used in Red Hat Enterprise Linux     7, kernel-rt, and Enterprise MRG 2 and when booted with     UEFI Secure Boot enabled, allows local users to bypass     intended securelevel/secureboot restrictions by     leveraging improper handling of secure_boot flag across     kexec reboot.(CVE-2015-7837)

  - In the Linux kernel through 5.8.7, local attackers able     to inject conntrack netlink configuration could     overflow a local buffer, causing crashes or triggering     use of incorrect protocol numbers in     ctnetlink_parse_tuple_filter in     net/netfilter/nf_conntrack_netlink.c, aka     CID-1cc5ef91d2ff.(CVE-2020-25211)

  - A flaw null pointer dereference in the Linux kernel     cgroupv2 subsystem in versions before 5.7.10 was found     in the way when reboot the system. A local user could     use this flaw to crash the system or escalate their     privileges on the system.(CVE-2020-14356)

  - Buffer overflow in i40e driver for Intel(R) Ethernet     700 Series Controllers versions before 7.0 may allow an     authenticated user to potentially enable an escalation     of privilege via local access.(CVE-2019-0145)

  - The Linux kernel through 5.7.11 allows remote attackers     to make observations that help to obtain sensitive     information about the internal state of the network     RNG, aka CID-f227e3ec3b5c. This is related to     drivers/char/random.c and     kernel/time/timer.c.(CVE-2020-16166)

  - The VFIO PCI driver in the Linux kernel through 5.6.13     mishandles attempts to access disabled memory     space.(CVE-2020-12888)

  - In the Linux kernel through 5.7.6, usbtest_disconnect     in drivers/usb/misc/usbtest.c has a memory leak, aka     CID-28ebeb8db770.(CVE-2020-15393)

  - A logic bug was found in the Linux kernels     implementation of SSBD. A bug in the logic handling can     allow an attacker with a local account to disable SSBD     protection during a context switch when additional     speculative execution mitigations are in     place.(CVE-2020-10766)

  - The prctl() function can be used to enable indirect     branch speculation even after it has been disabled.
    This same call will incorrectly report it being 'force     disabled' when it is not.(CVE-2020-10768)

  - A flaw was found in the Linux kernel's implementation     of the Enhanced IBPB (Indirect Branch Prediction     Barrier). The IBPB mitigation will be disabled when     STIBP is not available or when the Enhanced Indirect     Branch Restricted Speculation (IBRS) is available. This     flaw allows a local attacker to perform a Spectre V2     style attack when this configuration is active. The     highest threat from this vulnerability is to     confidentiality.(CVE-2020-10767)

  - A flaw was found in the ZRAM kernel module, where a     user with a local account and the ability to read the     /sys/class/zram-control/hot_add file can create ZRAM     device nodes in the /dev/ directory. This read     allocates kernel memory and is not accounted for a user     that triggers the creation of that ZRAM device. With     this vulnerability, continually reading the device may     consume a large amount of system memory and cause the     Out-of-Memory (OOM) killer to activate and terminate     random userspace processes, possibly making the system     inoperable.(CVE-2020-10781)

  - A flaw was found in the Linux kernel. An index buffer     overflow during Direct IO write leading to the NFS     client to crash. In some cases, a reach out of the     index after one memory allocation by kmalloc will cause     a kernel panic. The highest threat from this     vulnerability is to data confidentiality and system     availability.(CVE-2020-10742)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote OracleVM system is missing necessary patches to address security updates:

  - In fs/ocfs2/cluster/nodemanager.c in the Linux kernel before 4.15, local users can cause a denial of     service (NULL pointer dereference and BUG) because a required mutex is not used. (CVE-2017-18216)

  - In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local     escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931. (CVE-2018-9517)

  - Linux kernel CIFS implementation, version 4.9.0 is vulnerable to a relative paths injection in directory     entry lists. (CVE-2019-10220)

  - Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the     Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption), aka     CID-3f9361695113. (CVE-2019-19063)

  - A memory leak in the bfad_im_get_stats() function in drivers/scsi/bfa/bfad_attr.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     bfa_port_get_stats() failures, aka CID-0e62395da2bd. (CVE-2019-19066)

  - A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4.
    (CVE-2019-19074)

  - A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs.
    As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it     is possible for the specified target task to perform an execve() syscall with setuid execution before     perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check     and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged     execve() calls. This issue affects kernel versions before 4.8. (CVE-2019-3901)

  - An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c     has a deadlock if a coalescing operation fails. (CVE-2020-12771)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
223534	Linux Distros 未修补的漏洞: CVE-2020-27067	Nessus	Misc.	2025/3/4	2025/10/28	medium
154016	OracleVM 3.4：kernel-uek (OVMSA-2021-0035)	Nessus	OracleVM Local Security Checks	2021/10/12	2023/11/28	critical
154016	OracleVM 3.4：kernel-uek (OVMSA-2021-0035)	Nessus	OracleVM Local Security Checks	2021/10/12	2023/11/28	critical
223534	Linux Distros 未修補弱點：CVE-2020-27067	Nessus	Misc.	2025/3/4	2025/10/28	medium
154016	OracleVM 3.4: kernel-uek (OVMSA-2021-0035)	Nessus	OracleVM Local Security Checks	2021/10/12	2023/11/28	critical
223534	Linux Distros のパッチ未適用の脆弱性: CVE-2020-27067	Nessus	Misc.	2025/3/4	2025/10/28	medium
288057	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004244)	Nessus	Unity Linux Local Security Checks	2026/1/16	2026/1/16	medium
151767	EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2221)	Nessus	Huawei Local Security Checks	2021/7/16	2023/12/7	high
223534	Linux Distros Unpatched Vulnerability : CVE-2020-27067	Nessus	Misc.	2025/3/4	2025/10/28	medium
144693	EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1028)	Nessus	Huawei Local Security Checks	2021/1/4	2023/2/9	critical
288662	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004034)	Nessus	Unity Linux Local Security Checks	2026/1/16	2026/1/17	medium
283747	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001578)	Nessus	Unity Linux Local Security Checks	2026/1/14	2026/1/15	medium
147512	EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1604)	Nessus	Huawei Local Security Checks	2021/3/10	2023/2/9	critical
154016	OracleVM 3.4 : kernel-uek (OVMSA-2021-0035)	Nessus	OracleVM Local Security Checks	2021/10/12	2023/11/28	critical

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