遠端 Oracle Linux 7 主機中安裝的套件受到 ELSA-2019-4836 公告中提及的多個弱點影響。

  - 虛擬來賓 OS 針對多個 Intel (R) 處理器進行的頁面表格更新不當失效，可能會讓通過驗證的使用者透過本機存取引致拒絕服務。(CVE-2018-12207)

  - 在 5.2.3 版之前的 Linux 核心中，drivers/block/floppy.c 允許透過 setup_format_params 除以零來引致拒絕服務。連續出現兩個可觸發錯誤的 ioctl：首先，應使用 .sect 和 .rate 值設定磁碟機幾何，使 F_SECT_PER_TRACK 為零。接著，應呼叫磁碟片格式作業。插入磁碟片時，無權限的本機使用者不可觸發此問題。注意：QEMU 會依預設建立磁碟片裝置。(CVE-2019-14284)

  - 在 5.0.1 版之前的 Linux 核心中發現一個問題。net/core/net-sysfs.c 的 register_queue_kobjects() 中存在記憶體洩漏問題，可導致拒絕服務 (CVE-2019-15916)

  - 某些 CPU 上利用推測執行的 TSX Asynchronous Abort 條件可能允許經驗證的使用者以本機存取權限，透過旁路洩漏資訊。(CVE-2019-11135)

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

遠端 Redhat Enterprise Linux 7 主機上安裝的套件受到 RHSA-2020: 1070 公告中提及的多個弱點影響。

  - 核心：DVB connexant 驅動程式中存在越界讀取。(CVE-2015-9289)

  - 核心：缺少對 request_key() 目標的權限檢查，允許本機攻擊者能在沒有寫入權限的情況下，對 keyring 新增金鑰 (CVE-2017-17807)

  - 核心：drivers/net/usb/hso.c 的 hso_probe 中存在 oob 記憶體讀取 (CVE-2018-19985)

  - 核心：usb：__usb_get_extra_descriptor() 中缺少大小檢查，會導致 DoS (CVE-2018-20169)

  - 核心：透過網路 tun 處理中的 ioctl 叫用造成拒絕服務 (CVE-2018-7191)

  - 核心：hci_uart_set_flow_control 中存在 NULL 指標解除參照 (CVE-2019-10207)

  - 核心：net：弱 IP ID 產生導致遠端裝置追蹤 (CVE-2019-10638)

  - 核心：net：使用核心空間位址位元衍生 IP ID 可能中斷 KASLR (CVE-2019-10639)

  - 核心：存在 setuid 二進位檔的 ASLR 繞過，這是 install_exec_creds() 叫用過晚所致 (CVE-2019-11190)

  - 核心：透過 HIDPCONNADD 命令從核心堆疊記憶體洩漏敏感資訊 (CVE-2019-11884)

  - 核心：在 drm_load_edid_firmware 中，fwstr 中未檢查的 kstrdup 導致拒絕服務 (CVE-2019-12382)

  - 核心：arch/x86/lib/insn-eval.c 中存在釋放後使用 (CVE-2019-13233)

  - 核心：drivers/block/floppy.c 中發生整數溢位和 OOB 讀取 (CVE-2019-14283)

  - 核心：Marvell WiFi 驅動程式的 mwifiex_set_wmm_params() 函式中的堆積溢位可導致 DoS (CVE-2019-14815)

  - 核心：sound/usb/line6/pcm.c 中存在 NULL 指標解除參照 (CVE-2019-15221)

  - 核心：net/core/net-sysfs.c 的 register_queue_kobjects() 中發生記憶體洩漏，導致拒絕服務 (CVE-2019-15916)

  - 核心：WiFi beacon 驗證程式碼中存在緩衝區溢位強化。(CVE-2019-16746)

  - 核心：setuid 程式中的 perf_event_open() 和 execve() 爭用導致資料洩漏 (CVE-2019-3901)

  - 核心：brcmfmac 框架驗證繞過 (CVE-2019-9503)

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作出判斷。

* 核心：DVB connexant 驅動程式中存在越界讀取。* 核心：遺漏對 request_key() 目的地的權限檢查，允許本機攻擊者在無寫入權限的情況下將金鑰新增至 keyring * 核心：在網路 tun 處理中透過 ioctl 呼叫發生拒絕服務 * 核心：usb：在__usb_get_extra_descriptor() 中缺少大小檢查 * 核心：
setuid 程式中的 perf_event_open() 和 execve() 爭用允許資料洩漏 * 核心：brcmfmac 架構驗證繞過 * 核心：hci_uart_set_flow_control 中發生空指標解除參照 * 核心：透過 HIDPCONNADD 命令從核心堆疊記憶體洩漏敏感資訊 * 核心：在 drm_load_edid_firmw 中，fwstr 中未檢查的 kstrdup 導致拒絕服務 * 核心：arch/x86/lib/insn-eval.c 中發生釋放後使用 * 核心：在 arch/powerpc/kernel/signal_32.c 和 arch/powerpc/kernel/signal_64.c 中透過 sigreturn() 系統調用造成拒絕服務 * 核心：drivers/block/floppy.c 中發生整數溢位和 OOB 讀取 * 核心：net/core/net-sysfs.c 的 register_queue_kobjects() 中發生記憶體洩漏，導致拒絕服務 * 核心：WiFi 信標驗證程式碼中發生緩衝區溢位強化。* 核心：powerpc：不完整的 Spectre-RSB 緩解導致資訊洩漏 * 核心：drivers/net/usb/hso.c 中發生 oob 記憶體讀取 * 核心：net：弱式 IP ID 產生導致遠端裝置追蹤 * 核心：net：使用核心空間位址位元衍生 IP ID 可能會損毀 KASLR * 核心：存在 setuid 二進位檔的 ASLR 繞過，這是 install_exec_creds() 叫用過晚所致

遠端 Oracle Linux 7 主機中安裝的套件受到 ELSA-2020-1016 公告中提及的多個弱點影響。

  - 在 4.14.6 版之前的 Linux 核心中，KEYS 子系統在透過 request_key() 系統呼叫將金鑰新增至目前工作的預設要求金鑰 keyring 時，會省略存取控制檢查，這樣本機使用者就可以使用特製的系統呼叫序列，將金鑰新增至只具有該 keyring 搜尋權限 (而非寫入權限) 的 keyring，此問題與 construct_get_dest_keyring() in security/keys/request_key.c 有關。
    (CVE-2017-17807)

  - 在 4.19.8 及之前版本的 Linux 核心中， drivers/net/usb/hso.c 的 hso_get_config_data 函式會讀取 USB 裝置中的 if_num 並使用其索引小陣列，從而導致讀取超出邊界 (OOB) 的對象，而這可能允許系統在核心位址空間中執行任意讀取。(CVE-2018-19985)

  - 4.8 之前的 Linux 核心允許本機使用者繞過 setuid 程式 (例如 /bin/su) 上的 ASLR，由於太晚呼叫 fs/binfmt_elf.c 中 load_elf_binary() 的 install_exec_creds()，因此 ptrace_may_access() 檢查在讀取 /proc/pid/stat 時會出現爭用情形。(CVE-2019-11190)

  - 在 5.0.15 版之前的 Linux 核心中，net/bluetooth/hidp/sock.c 的 do_hidp_sock_ioctl 函式可能讓本機使用者得以透過 HIDPCONNADD 命令從核心堆疊記憶體取得敏感資訊，這是因為名稱欄位的結尾可能不是「\0」字元。(CVE-2019-11884)

  - 在早於 4.13.14 的 Linux 核心的 tun 子系統中，未在 register_netdevice 之前呼叫 dev_get_valid_name。此問題會讓本機使用者透過含有 / 字元之 dev 名稱的 ioctl (TUNSETIFF) 呼叫，造成拒絕服務 (NULL 指標解除參照和錯誤)。此問題與 CVE-2013-4343 類似。(CVE-2018-7191)

  - 在 4.19.9 版之前的 Linux 核心中發現一個問題。USB 子系統在讀取額外的描述元期間，未正確處理大小檢查，這與 drivers/usb/core/usb.c 中的 __usb_get_extra_descriptor 有關。
    (CVE-2018-20169)

  - ** 有爭議 ** 在 Linux 核心 5.1.5 及之前版本中，drivers/gpu/drm/drm_edid_load.c 的 drm_load_edid_firmware 中發現一個問題。fwstr 中存在未經檢查的 kstrdup，攻擊者或可藉此造成拒絕服務 (NULL 指標解除參照和系統當機)。注意：kstrdup() 傳回 NULL 的過程得到充分處理，且不可能發生 NULL 指標解除參照，因此廠商認為此問題不是弱點。(CVE-2019-12382)

  - 提交 a4176ec356c73a46c07c181c6d04039fafa34a9f 之前的 Broadcom brcmfmac WiFi 驅動程式容易遭受框架驗證繞過影響。如果 brcmfmac 驅動程式收到遠端來源的韌體事件框架，則 is_wlc_event_frame 函式將造成此框架遭到捨棄並不會得到處理。如果驅動程式收到來自主機的韌體事件框架，則會呼叫適當的處置程式。如果使用的匯流排為 USB (例如 wifi 硬體鎖)，則可繞過此框架驗證。這可允許處理遠端來源的韌體事件框架。在最嚴重情況下，未經驗證的遠端攻擊者或可透過傳送特別建構的 WiFi 封包，在有弱點的系統上執行任意程式碼。
    更常見的情況是，此弱點將導致拒絕服務情形。(CVE-2019-9503)

  - 在 5.2.3 版之前的 Linux 核心中，drivers/block/floppy.c 中的 set_geometry 未驗證 sect 和 head 欄位，整數溢位和超出邊界讀取即為一例。插入磁碟片時，無權限的本機使用者可觸發此問題。注意：QEMU 會依預設建立磁碟片裝置。(CVE-2019-14283)

  - 在 4.1.4 版之前 Linux 核心中，檢查 drivers/media/dvb-frontends/cx24116.c 中的使用者空間參數時會發生緩衝區溢位。根據使用者空間 API，DiSEqC 命令的大小上限為 6。但是，程式碼允許更大的值，例如 23。(CVE-2015-9289)

  - 在 4.18.0 之前的核心 3.x.x 和核心 5.x.x 的 UART 藍牙實作中發現一個瑕疵。具有藍牙硬體本機存取權和寫入權限的攻擊者可利用此瑕疵發出特製的 ioctl 函式呼叫，並造成系統當機。
    (CVE-2019-10207)

  - 在 5.0.1 版之前的 Linux 核心中發現一個問題。net/core/net-sysfs.c 的 register_queue_kobjects() 中存在記憶體洩漏問題，可導致拒絕服務 (CVE-2019-15916)

  - 在 5.1.7 版之前的 Linux 核心中，攻擊者可以使用核心針對無連線通訊協定 (例如 UDP 和 ICMP) 產生的 IP ID 值來追踪裝置。當此類流量傳送至多個目的地 IP 位址時，可能取得 (計數器陣列索引的) 雜湊衝突，進而取得雜湊金鑰 (透過列舉)。透過主控使用 WebRTC 或 gQUIC 的特製網頁來強制 UDP 流量傳送至攻擊者控制的 IP 位址，進而發動攻擊。(CVE-2019-10638)

  - 在早於 5.1.9 的 Linux 核心的 arch/x86/lib/insn-eval.c 中，LDT 項目存取時發生釋放後使用錯誤，這是 modify_ldt() 與 MPX 邊界違規的 #BR 例外狀況之間存在爭用情形所致。(CVE-2019-13233)

  - 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 5.2.17 版及之前版本的 Linux 核心中，在 net/wireless/nl80211.c 中發現一個問題。它不會檢查 beacon 標頭中的變數元素長度，進而導致緩衝區溢位。(CVE-2019-16746)

  - 5.0.8 及之前版本的 Linux 核心 4.x (自 4.1 開始發佈) 和 5.x 存在資訊洩漏 (部分核心位址洩漏) 問題，進而導致 KASLR 繞過情形。具體而言，可以使用核心針對無連線通訊協定 (例如 UDP 和 ICMP) 產生的 IP ID 值，擷取 KASLR 核心影像位移。當此類流量傳送至多個目的地 IP 位址時，可能取得 (計數器陣列索引的) 雜湊衝突，進而取得雜湊金鑰 (透過列舉)。此金鑰包含來自 (靜態變數的) 核心位址的足夠位元，因此當擷取金鑰 (透過列舉) 時，會暴露核心影像的位移。此攻擊可從遠端執行，攻擊者可強制目標裝置傳送 UDP 或 ICMP (或特定其他) 流量至攻擊者控制的 IP 位址。如果伺服器為 DNS 伺服器，很輕易就可以強制伺服器傳送 UDP 流量。如果伺服器回應 ICMP Echo 要求 (ping)，則 ICMP 流量將變得微不足道。針對用戶端目標，如果目標造訪攻擊者的網頁，則可使用 WebRTC 或 gQUIC 將 UDP 流量強制傳送至攻擊者控制的 IP 位址。注意：此針對 KASLR 的攻擊之所以在 4.1 版本中變得可行，是因為 IP ID 產生已變更為與網路命名空間相關的位址有相依性。(CVE-2019-10639)

  - 在 powerpc 平台上的 Linux 核心 5.2.1 和之前所有版本中，停用硬體交易記憶體時，本機使用者可透過傳送特製訊號幀的 sigreturn() 系統呼叫造成拒絕服務 (TM Bad Thing 例外狀況和系統損毀)。此問題影響 arch/powerpc/kernel/signal_32.c 和 arch/powerpc/kernel/signal_64.c。(CVE-2019-13648)

  - powerpc上 5.4.1 之前的 Linux 核心允許執行 Information Exposure，因為系統未針對所有適用的 CPU 執行 Spectre-RSB 緩解措施， 亦稱 CID-39e72bf96f58。這其實與 arch/powerpc/kernel/entry_64.S 和 arch/powerpc/kernel/security.c 有關。(CVE-2019-18660)

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作出判斷。

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0740 advisory.

  - A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to     4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer     dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS     server. Any outstanding disk writes to the NFS server will be lost. (CVE-2018-16871)

  - The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel before 5.0.15 allows a     local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command,     because a name field may not end with a '\0' character. (CVE-2019-11884)

  - In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of     other users' processes via a Facility Unavailable exception. To exploit the venerability, a local user     starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector     registers. At some point, the vector registers will be corrupted with the values from a different local     Linux process because of a missing arch/powerpc/kernel/process.c check. (CVE-2019-15030)

  - An issue was discovered in the Linux kernel before 5.0.1. There is a memory leak in     register_queue_kobjects() in net/core/net-sysfs.c, which will cause denial of service. (CVE-2019-15916)

  - rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a     certain upper-bound check, leading to a buffer overflow. (CVE-2019-17666)

  - An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a     net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large     integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified     other impact, aka CID-19fad20d15a6. (CVE-2019-18805)

  - A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before     5.1-rc1. (CVE-2019-3459)

  - A heap data infoleak in multiple locations including L2CAP_PARSE_CONF_RSP was found in the Linux kernel     before 5.1-rc1. (CVE-2019-3460)

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4836 advisory.

    - kvm: x86: mmu: Recovery of shattered NX large pages (Junaid Shahid)  [Orabug: 29967630]     {CVE-2018-12207}
    - kvm: Add helper function for creating VM worker threads (Junaid Shahid)  [Orabug: 29967630]     {CVE-2018-12207}
    - kvm: mmu: ITLB_MULTIHIT mitigation (Paolo Bonzini)  [Orabug: 29967630]  {CVE-2018-12207}
    - x86: Add ITLB_MULTIHIT bug infrastructure (Pawan Gupta)  [Orabug: 29967630]  {CVE-2018-12207}
    - KVM: x86: remove now unneeded hugepage gfn adjustment (Paolo Bonzini)  [Orabug: 29967630]     {CVE-2018-12207}
    - KVM: x86: make FNAME(fetch) and __direct_map more similar (Paolo Bonzini)  [Orabug: 29967630]     {CVE-2018-12207}
    - kvm: x86: Do not release the page inside mmu_set_spte() (Junaid Shahid)  [Orabug: 29967630]     {CVE-2018-12207}
    - kvm: Convert kvm_lock to a mutex (Junaid Shahid)  [Orabug: 29967630]  {CVE-2018-12207}
    - x86/tsx: Add config options to set tsx=on|off|auto (Michal Hocko)  [Orabug: 30419234]  {CVE-2019-11135}
    - x86/speculation/taa: Add documentation for TSX Async Abort (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - x86/tsx: Add 'auto' option to the tsx= cmdline parameter (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - kvm/x86: Export MDS_NO=0 to guests when TSX is enabled (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - x86/speculation/taa: Add sysfs reporting for TSX Async Abort (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - x86/speculation/taa: Add mitigation for TSX Async Abort (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - x86/cpu: Add a 'tsx=' cmdline option with TSX disabled by default (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - x86/cpu: Add a helper function x86_read_arch_cap_msr() (Pawan Gupta)  [Orabug: 30419234]     {CVE-2019-11135}
    - x86/msr: Add the IA32_TSX_CTRL MSR (Pawan Gupta)  [Orabug: 30419234]  {CVE-2019-11135}
    - floppy: fix div-by-zero in setup_format_params (Denis Efremov)  [Orabug: 30447842]  {CVE-2019-14284}
    - net-sysfs: Fix mem leak in netdev_register_kobject (YueHaibing)  [Orabug: 30350262]  {CVE-2019-15916}

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

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

The SUSE Linux Enterprise 15 SP1 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-15916: Fixed a memory leak in register_queue_kobjects() which might have led denial of service (bsc#1149448).

CVE-2019-0154: Fixed an improper access control in subsystem for Intel (R) processor graphics whichs may have allowed an authenticated user to potentially enable denial of service via local access (bsc#1135966).

CVE-2019-0155: Fixed an improper access control in subsystem for Intel (R) processor graphics whichs may have allowed an authenticated user to potentially enable escalation of privilege via local access (bsc#1135967).

CVE-2019-16231: Fixed a NULL pointer dereference due to lack of checking the alloc_workqueue return value (bsc#1150466).

CVE-2019-18805: Fixed an integer overflow in tcp_ack_update_rtt() leading to a denial of service or possibly unspecified other impact (bsc#1156187).

CVE-2019-17055: Enforced CAP_NET_RAW in the AF_ISDN network module to restrict unprivileged users to create a raw socket (bsc#1152782).

CVE-2019-16995: Fixed a memory leak in hsr_dev_finalize() which may have caused denial of service (bsc#1152685).

CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack.(bsc#1139073). The Linux kernel was supplemented with the option to disable TSX operation altogether (requiring CPU Microcode updates on older systems) and better flushing of microarchitectural buffers (VERW). The set of options available is described in our TID at https://www.suse.com/support/kb/doc/?id=7024251

CVE-2019-16233: drivers/scsi/qla2xxx/qla_os.c did not check the alloc_workqueue return value, leading to a NULL pointer dereference.
(bsc#1150457).

CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional.

CVE-2019-10220: Added sanity checks on the pathnames passed to the user space. (bsc#1144903)

CVE-2019-17666: rtlwifi: Fix potential overflow in P2P code (bsc#1154372).

CVE-2019-16232: Fix a potential NULL pointer dereference in the Marwell libertas driver (bsc#1150465).

CVE-2019-16234: iwlwifi pcie driver did not check the alloc_workqueue return value, leading to a NULL pointer dereference. (bsc#1150452).

CVE-2019-17133: cfg80211 wireless extension did not reject a long SSID IE, leading to a Buffer Overflow (bsc#1153158).

CVE-2019-17056: The AF_NFC network module did not enforce CAP_NET_RAW, which meant that unprivileged users could create a raw socket (bsc#1152788).

CVE-2019-15291: Fixed a NULL pointer dereference caused by a malicious USB device in the flexcop_usb_probe function (bsc#1146519).

CVE-2019-14821: Fixed an out-of-bounds access resulting in a denial of service or potentially escalating privileges on the system (bnc#1151350).

CVE-2017-18595: Fixed a double free which caused by the function allocate_trace_buffer (bsc#1149555).

CVE-2019-9506: Fixed an issue with Bluetooth which permited low encryption key length and did not prevent an attacker from influencing the key length negotiation allowing brute-force attacks (bsc#1137865).

The update package also includes non-security fixes. See advisory for details.

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

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-14895: A heap-based buffer overflow was discovered in the Linux kernel in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could have allowed the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-18660: The Linux kernel on powerpc allowed Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid in the Linux kernel. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-18809: A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1156258).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures (bnc#1157333).

CVE-2019-19057: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19056: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures (bnc#1157197).

CVE-2019-19068: A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157307).

CVE-2019-19063: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157298).

CVE-2019-19227: In the AppleTalk subsystem in the Linux kernel there was a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client (bnc#1157678).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures (bnc#1157191).

CVE-2019-19077: A memory leak in the bnxt_re_create_srq() function in drivers/infiniband/hw/bnxt_re/ib_verbs.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering copy to udata failures (bnc#1157171).

CVE-2019-19052: A memory leak in the gs_can_open() function in drivers/net/can/usb/gs_usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157324).

CVE-2019-19067: Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering mfd_add_hotplug_devices() or pm_genpd_add_device() failures (bsc#1157180).

CVE-2019-19060: A memory leak in the adis_update_scan_mode() function in drivers/iio/imu/adis_buffer.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157178).

CVE-2019-19049: A memory leak in the unittest_data_add() function in drivers/of/unittest.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering of_fdt_unflatten_tree() failures (bsc#1157173).

CVE-2019-19075: A memory leak in the ca8210_probe() function in drivers/net/ieee802154/ca8210.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering ca8210_get_platform_data() failures (bnc#1157162).

CVE-2019-19058: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures (bnc#1157145).

CVE-2019-19074: A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157143).

CVE-2019-19073: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function (bnc#1157070).

CVE-2019-15916: An issue was discovered in the Linux kernel There was a memory leak in register_queue_kobjects() in net/core/net-sysfs.c, which will cause denial of service (bnc#1149448).

CVE-2019-16231: drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150466).

CVE-2019-18805: An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel There was a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact (bnc#1156187).

CVE-2019-17055: base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel did not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket (bnc#1152782).

The update package also includes non-security fixes. See advisory for details.

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-1016 advisory.

    - [mm] mm: prevent get_user_pages() from overflowing page refcount (Aristeu Rozanski) [1705005]     {CVE-2019-11487}
    - [mm] mm/hugetlb.c: __get_user_pages ignores certain follow_hugetlb_page errors (Aristeu Rozanski)     [1705005] {CVE-2019-11487}
    - [wireless] rtlwifi: Fix potential overflow on P2P code (Josef Oskera) [1775236] {CVE-2019-17666}
    - [x86] kvm: vmx: implement MSR_IA32_TSX_CTRL disable RTM functionality (Paolo Bonzini) [1779768]     {CVE-2019-19338}
    - [x86] kvm: x86: Mark expected switch fall-throughs (Paolo Bonzini) [1779768] {CVE-2019-19338}
    - [x86] kvm: x86: implement MSR_IA32_TSX_CTRL effect on CPUID (Paolo Bonzini) [1779768] {CVE-2019-19338}
    - [x86] kvm: x86: do not modify masked bits of shared MSRs (Paolo Bonzini) [1779768] {CVE-2019-19338}
    - [x86] kvm: x86: fix presentation of TSX feature in ARCH_CAPABILITIES (Paolo Bonzini) [1779768]     {CVE-2019-19338}
    - [x86] kvm/x86: Export MDS_NO=0 to guests when TSX is enabled (Paolo Bonzini) [1779768] {CVE-2019-19338}
    - [wireless] mwifiex: Fix heap overflow in mmwifiex_process_tdls_action_frame() (Stanislaw Gruszka)     [1776157] {CVE-2019-14901}
    - [x86] x86/speculation: Remove unneeded STIBP code (Waiman Long) [1766540] {CVE-2019-11135}
    - [x86] x86/speculation: Fix redundant MDS mitigation message (Waiman Long) [1766540] {CVE-2019-11135}
    - [documentation] x86/speculation: Fix incorrect MDS/TAA mitigation status (Waiman Long) [1766540]     {CVE-2019-11135}
    - [x86] x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs (Waiman Long) [1766540]     {CVE-2019-11135}
    - [x86] x86/tsx: Add config options to set tsx=on|off|auto (Waiman Long) [1766540] {CVE-2019-11135}
    - [documentation] x86/speculation/taa: Add documentation for TSX Async Abort (Waiman Long) [1766540]     {CVE-2019-11135}
    - [x86] x86/tsx: Add 'auto' option to the tsx= cmdline parameter (Waiman Long) [1766540] {CVE-2019-11135}
    - [base] x86/speculation/taa: Add sysfs reporting for TSX Async Abort (Waiman Long) [1766540]     {CVE-2019-11135}
    - [x86] x86/speculation/taa: Add mitigation for TSX Async Abort (Waiman Long) [1766540] {CVE-2019-11135}
    - [x86] x86/cpu: Add a 'tsx=' cmdline option with TSX disabled by default (Waiman Long) [1766540]     {CVE-2019-11135}
    - [x86] x86/cpu: Add a helper function x86_read_arch_cap_msr() (Waiman Long) [1766540] {CVE-2019-11135}
    - [x86] x86/msr: Add the IA32_TSX_CTRL MSR (Waiman Long) [1766540] {CVE-2019-11135}
    - [documentation] documentation: Add ITLB_MULTIHIT documentation (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [x86] kvm: x86: mmu: Recovery of shattered NX large pages (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [virt] kvm: Add helper function for creating VM worker threads (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [x86] kvm: mmu: ITLB_MULTIHIT mitigation (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [kernel] cpu/speculation: Uninline and export CPU mitigations helpers (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [x86] cpu: Add Tremont to the cpu vulnerability whitelist (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [x86] Add ITLB_MULTIHIT bug infrastructure (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [x86] kvm: vmx, svm: always run with EFER.NXE=1 when shadow paging is active (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [x86] kvm: x86: add tracepoints around __direct_map and FNAME(fetch) (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [x86] kvm: x86: change kvm_mmu_page_get_gfn BUG_ON to WARN_ON (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [x86] kvm: x86: remove now unneeded hugepage gfn adjustment (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [x86] kvm: x86: make FNAME(fetch) and __direct_map more similar (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [x86] kvm: mmu: Do not release the page inside mmu_set_spte() (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [x86] kvm: x86: mmu: Remove unused parameter of __direct_map() (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [virt] kvm: Convert kvm_lock to a mutex (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [x86] kvm: mmu: drop vcpu param in gpte_access (Paolo Bonzini) [1690343] {CVE-2018-12207}
    - [virt] kvm: x86, powerpc: do not allow clearing largepages debugfs entry (Paolo Bonzini) [1690343]     {CVE-2018-12207}
    - [media] cx24116: fix a buffer overflow when checking userspace params (Jarod Wilson) [1737279]     {CVE-2015-9289}
    - [drm] drm/i915/cmdparser: Fix jump whitelist clearing (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Lower RM timeout to avoid DSI hard hangs (Dave Airlie) [1756816] {CVE-2019-0154}
    - [drm] drm/i915/gen8+: Add RC6 CTX corruption WA (Dave Airlie) [1756816] {CVE-2019-0154}
    - [drm] drm/i915/cmdparser: Ignore Length operands during command matching (Dave Airlie) [1756883]     {CVE-2019-0155}
    - [drm] drm/i915/cmdparser: Add support for backward jumps (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915/cmdparser: Use explicit goto for error paths (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Add gen9 BCS cmdparsing (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Allow parsing of unsized batches (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Support ro ppgtt mapped cmdparser shadow buffers (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Add support for mandatory cmdparsing (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Remove Master tables from cmdparser (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Disable Secure Batches for gen6+ (Dave Airlie) [1756883] {CVE-2019-0155}
    - [drm] drm/i915: Rename gen7 cmdparser tables (Dave Airlie) [1756883] {CVE-2019-0155}
    - [net] sysfs: Fix mem leak in netdev_register_kobject (Stefano Brivio) [1752690] {CVE-2019-15916}
    - [kernel] perf/core: Fix perf_event_open() vs. execve() race (Jiri Olsa) [1701620] {CVE-2019-3901}

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

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1070 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: out of bound read in DVB connexant driver. (CVE-2015-9289)

    * kernel: Missing permissions check for request_key() destination allows local attackers to add keys to     keyring without Write permission (CVE-2017-17807)

    * kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)

    * kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)

    * kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)

    * kernel: brcmfmac frame validation bypass (CVE-2019-9503)

    * kernel: null-pointer dereference in hci_uart_set_flow_control (CVE-2019-10207)

    * kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command     (CVE-2019-11884)

    * kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service (CVE-2019-12382)

    * kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

    * kernel: integer overflow and OOB read in drivers/block/floppy.c (CVE-2019-14283)

    * kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service     (CVE-2019-15916)

    * kernel: buffer-overflow hardening in WiFi beacon validation code. (CVE-2019-16746)

    * kernel: oob memory read in hso_probe in drivers/net/usb/hso.c (CVE-2018-19985)

    * Kernel: net: weak IP ID generation leads to remote device tracking (CVE-2019-10638)

    * Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR     (CVE-2019-10639)

    * kernel: ASLR bypass for setuid binaries due to late install_exec_creds() (CVE-2019-11190)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

* kernel: out of bound read in DVB connexant driver. * kernel: Missing permissions check for request_key() destination allows local attackers to add keys to keyring without Write permission * kernel: denial of service via ioctl call in network tun handling * kernel: usb: missing size check in the __usb_get_extra_descriptor() * kernel:
perf_event_open() and execve() race in setuid programs allows a data leak * kernel: brcmfmac frame validation bypass * kernel: NULL pointer dereference in hci_uart_set_flow_control * kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command * kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service * kernel: use-after-free in arch/x86/lib/insn-eval.c * kernel: denial of service in arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c via sigreturn() system call * kernel: integer overflow and OOB read in drivers/block/floppy.c * kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service * kernel: buffer-overflow hardening in WiFi beacon validation code. * kernel: (powerpc) incomplete Spectre-RSB mitigation leads to information exposure * kernel: oob memory read in hso_probe in drivers/net/usb/hso.c * Kernel: net: weak IP ID generation leads to remote device tracking * Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR * kernel: ASLR bypass for setuid binaries due to late install_exec_creds()

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
130994	Oracle Linux 7：Unbreakable Enterprise 核心 (ELSA-2019-4836)	Nessus	Oracle Linux Local Security Checks	2019/11/14	2024/11/1	medium
135078	RHEL 7：kernel-rt (RHSA-2020: 1070)	Nessus	Red Hat Local Security Checks	2020/4/1	2024/11/7	critical
135813	Scientific Linux 安全性更新：SL7.x x86_64 上的核心 (20200407)	Nessus	Scientific Linux Local Security Checks	2020/4/21	2024/3/15	critical
180720	Oracle Linux 7：核心 (ELSA-2020-1016)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/22	critical
208605	CentOS 7 : kernel-alt (RHSA-2020:0740)	Nessus	CentOS Local Security Checks	2024/10/9	2024/10/9	critical
130994	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2019-4836)	Nessus	Oracle Linux Local Security Checks	2019/11/14	2024/11/1	medium
132071	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:3295-1)	Nessus	SuSE Local Security Checks	2019/12/16	2024/4/4	critical
132389	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:3371-1)	Nessus	SuSE Local Security Checks	2019/12/23	2024/4/2	critical
180720	Oracle Linux 7 : kernel (ELSA-2020-1016)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/22	critical
131845	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-2353)	Nessus	Huawei Local Security Checks	2019/12/10	2024/4/5	critical
135078	RHEL 7 : kernel-rt (RHSA-2020:1070)	Nessus	Red Hat Local Security Checks	2020/4/1	2024/11/7	critical
135813	Scientific Linux Security Update : kernel on SL7.x x86_64 (20200407)	Nessus	Scientific Linux Local Security Checks	2020/4/21	2024/3/15	critical

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