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。

  - 已修复 Linux 内核中的下列漏洞：cpufreq: CPPC: Add u64 casts to avoid overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

AlmaLinux 9.2 主機已安裝的套件會受到 TuxCare ALMALINUX9.2：CLSA-2026：1787307395 公告中提及的多個弱點影響。

  - 已解決 Linux 核心中的下列弱點：ftrace: Clean up hash direct_functions on register failures We see the following GPF when register_ftrace_direct fails: [ ] general protection fault, probably for non-canonical address \ 0x200000000000010: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI [...] [ ] RIP: 0010:ftrace_find_rec_direct+0x53/0x70 [ ] Code: 48 c1 e0 03 48 03 42 08 48 8b 10 31 c0 48 85 d2 74 [...] [ ] RSP: 0018:ffffc9000138bc10 EFLAGS: 00010206 [ ] RAX: 0000000000000000 RBX:
    ffffffff813e0df0 RCX: 000000000000003b [ ] RDX: 0200000000000000 RSI: 000000000000000c RDI:
    ffffffff813e0df0 [ ] RBP: ffffffffa00a3000 R08: ffffffff81180ce0 R09: 0000000000000001 [ ] R10:
    ffffc9000138bc18 R11: 0000000000000001 R12: ffffffff813e0df0 [ ] R13: ffffffff813e0df0 R14:
    ffff888171b56400 R15: 0000000000000000 [ ] FS: 00007fa9420c7780(0000) GS:ffff888ff6a00000(0000) knlGS:000000000 [ ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ ] CR2: 000000000770d000 CR3:
    0000000107d50003 CR4: 0000000000370ee0 [ ] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
    0000000000000000 [ ] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ ] Call Trace: [ ] <TASK> [ ] register_ftrace_direct+0x54/0x290 [ ] ? render_sigset_t+0xa0/0xa0 [ ] bpf_trampoline_update+0x3f5/0x4a0 [ ] ? 0xffffffffa00a3000 [ ] bpf_trampoline_link_prog+0xa9/0x140 [ ] bpf_tracing_prog_attach+0x1dc/0x450 [ ] bpf_raw_tracepoint_open+0x9a/0x1e0 [ ] ? find_held_lock+0x2d/0x90 [ ] ? lock_release+0x150/0x430 [ ] __sys_bpf+0xbd6/0x2700 [ ] ? lock_is_held_type+0xd8/0x130 [ ]
    __x64_sys_bpf+0x1c/0x20 [ ] do_syscall_64+0x3a/0x80 [ ] entry_SYSCALL_64_after_hwframe+0x44/0xae [ ] RIP:
    0033:0x7fa9421defa9 [ ] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 9 f8 [...] [ ] RSP:
    002b:00007ffed743bd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ ] RAX: ffffffffffffffda RBX:
    00000000069d2480 RCX: 00007fa9421defa9 [ ] RDX: 0000000000000078 RSI: 00007ffed743bd80 RDI:
    0000000000000011 [ ] RBP: 00007ffed743be00 R08: 0000000000bb7270 R09: 0000000000000000 [ ] R10:
    00000000069da210 R11: 0000000000000246 R12: 0000000000000001 [ ] R13: 00007ffed743c4b0 R14:
    00000000069d2480 R15: 0000000000000001 [ ] </TASK> [ ] Modules linked in: klp_vm(OK) [ ] ---[ end trace 0000000000000000 ]--- One way to trigger this is: 1. load a livepatch that patches kernel function xxx; 2.
    run bpftrace -e 'kfunc:xxx {}', this will fail (expected for now); 3. repeat #2 => gpf. This is because the entry is added to direct_functions, but not removed. Fix this by remove the entry from direct_functions when register_ftrace_direct fails. Also remove the last trailing space from ftrace.c, so we don't have to worry about it anymore. (CVE-2022-49402)

  - 已解決 Linux 核心中的下列弱點：irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions of_find_node_by_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.
    (CVE-2022-49715)

  - 已解決 Linux 核心中的下列弱點：cpufreq: CPPC: Add u64 casts to avoid overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

  - 已解決 Linux 核心中的下列弱點：net: stream: purge sk_error_queue in sk_stream_kill_queues() Changheon Lee reported TCP socket leaks, with a nice repro. It seems we leak TCP sockets with the following sequence: 1) SOF_TIMESTAMPING_TX_ACK is enabled on the socket. Each ACK will cook an skb put in error queue, from __skb_tstamp_tx(). __skb_tstamp_tx() is using skb_clone(), unless SOF_TIMESTAMPING_OPT_TSONLY was also requested. 2) If the application is also using MSG_ZEROCOPY, then we put in the error queue cloned skbs that had a struct ubuf_info attached to them. Whenever an struct ubuf_info is allocated, sock_zerocopy_alloc() does a sock_hold(). As long as the cloned skbs are still in sk_error_queue, socket refcount is kept elevated. 3) Application closes the socket, while error queue is not empty. Since tcp_close() no longer purges the socket error queue, we might end up with a TCP socket with at least one skb in error queue keeping the socket alive forever. This bug can be (ab)used to consume all kernel memory and freeze the host. We need to purge the error queue, with proper synchronization against concurrent writers. (CVE-2022-50838)

  - 已解決 Linux 核心中的下列弱點：bpf: Add preempt_count_{sub,add} into btf id deny list The recursion check in __bpf_prog_enter* and __bpf_prog_exit* leave preempt_count_{sub,add} unprotected. When attaching trampoline to them we get panic as follows, [867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28) [ 867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI [867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4 [ 867.843100] Call Trace: [867.843101] <TASK> [ 867.843104] asm_exc_int3+0x3a/0x40 [ 867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0 [ 867.843135] __bpf_prog_enter_recur+0x17/0x90 [ 867.843148] bpf_trampoline_6442468108_0+0x2e/0x1000 [867.843154] ? preempt_count_sub+0x1/0xa0 [ 867.843157] preempt_count_sub+0x5/0xa0 [ 867.843159] ? migrate_enable+0xac/0xf0 [ 867.843164] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843168] bpf_trampoline_6442468108_0+0x55/0x1000 ... [ 867.843788] preempt_count_sub+0x5/0xa0 [ 867.843793] ? migrate_enable+0xac/0xf0 [ 867.843829] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35) [ 867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c) [ 867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec) [867.843842] bpf_trampoline_6442468108_0+0x55/0x1000 ... That is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are called after prog->active is decreased. Fixing this by adding these two functions into btf ids deny list. (CVE-2023-54086)

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。

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。

  - 已解決 Linux 核心中的下列弱點：cpufreq: CPPC: Add u64 casts to avoid overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

請注意，Nessus 依賴供應商報告的套件存在。

远程 Redhat Enterprise Linux 9 主机上安装的多个程序包受到 RHSA-2023:6583 公告中提及的多个漏洞影响。

  - 内核：内存管理器中设备私有页面发生故障时，出现争用 (CVE-2022-3523)

  - kernel：l1oip 计时器处理程序中的释放后使用 (CVE-2022-3565)

  - 内核：intr_callback 的 r8152 中存在速率限制溢出消息 (CVE-2022-3594)

  - 内核：vmwgfx：vmw_cmd_res_check 中存在释放后使用漏洞 (CVE-2022-38457)

  - 内核：vmwgfx：vmw_execbuf_tie_context 中存在释放后使用漏洞 (CVE-2022-40133)

  - hw: Intel：收集数据采样 (GDS) 边信道漏洞 (CVE-2022-40982)

  - 内核：net/bluetooth/l2cap_core.c 的 l2cap_parse_conf_req 中存在信息泄漏漏洞 (CVE-2022-42895)

  - kernel: x86/mm：随机化 per-cpu 条目区域 (CVE-2023-0597)

  - kernel: HID：检查 hid_validate_values() 中空的 report_list (CVE-2023-1073)

  - kernel: sctp：如果给定范围内没有可以使用的绑定地址，则失败 (CVE-2023-1074)

  - kernel: net/tls：tls_is_tx_ready() 检查了 list_entry (CVE-2023-1075)

  - kernel: tap: tap_open()：正确初始化套接字 uid (CVE-2023-1076)

  - kernel: hid：asus_remove() 中的释放后使用 (CVE-2023-1079)

  - kernel：IPv6 连接查找表中的哈希冲突 (CVE-2023-1206)

  - kernel：file_files_note 中缺少 mmap_lock，可能导致 coredump 代码中出现释放后使用 (CVE-2023-1249)

  - kernel: ovl：修复 ovl_aio_req 结构中的释放后使用 (CVE-2023-1252)

  - Kernel：fs/nfsd/nfs4proc.c 中 nfsd4_ssc_setup_dul 中的释放后使用 (CVE-2023-1652)

  - kernel：删除函数 xgene_hwmon_remove 中的释放后使用缺陷 (CVE-2023-1855)

  - Kernel：由于争用条件，xen_9pfs_front_remove 中存在释放后使用 (CVE-2023-1989)

  - Kernel：dm- ioctl.c 的 dm_get_inactive_table 中可能存在死锁问题，进而导致 DOS (CVE-2023-2269)

  - kernel：r592_remove 中的释放后使用缺陷 (CVE-2023-3141)

  - kernel: fbcon：fbcon_set_font() 中的 shift 越界 (CVE-2023-3161)

  - kernel: gfs2：修复 gfs2_rgrp_dump 中的空指针取消引用漏洞 (CVE-2023-3212)

  - kernel：relay_file_read 中的越界访问 (CVE-2023-3268)

  - kernel：由于 shtp_cl_get_dma_send_buf() 中缺少 kalloc() 返回值检查，导致空指针取消引用 (CVE-2023-3358)

  - kernel：net/sched：如果 tcf_change_indev() 失败，cls_u32 组件引用计数器将会泄漏 (CVE-2023-3609)

  - kernel: xfrm：xfrm_update_ae_params() 中的空指针取消引用 (CVE-2023-3772)

  - kernel: xfrm：XFRMA_MTIMER_THRESH nlattr 发生越界读取 (CVE-2023-3773)

  - kernel：SEV-ES/SEV-SNP VMGEXIT 双重提取漏洞 (CVE-2023-4155)

   kernel: tap: tap_open()：正确初始化套接字 uid，再将 i_uid 修复为 current_fsuid (CVE-2023-4194)

  - kernel：net/sched：net/sched 分类器中存在释放后使用漏洞：cls_fw、cls_u32 和 cls_route（CVE-2023-4206、CVE-2023-4207、CVE-2023-4208）

  - kernel: exFAT：exfat_get_uniname_from_ext_entry 中的堆栈溢出（CVE-2023-4273）

  - kernel: mpls：sysctl 分配时的双重释放失败 (CVE-2023-26545)

  - 内核：KVM：nVMX：缺少对 CR0 和 CR4 的一致性检查 (CVE-2023-30456)

  - kernel：net: qcom/emac: 争用条件导致 emac_remove() 中发生释放后使用 (CVE-2023-33203)

  - 内核：vmwgfx：争用条件导致信息泄露漏洞 (CVE-2023-33951)

  - 内核：vmwgfx：处理 vmw_buffer_object 对象时发生双重释放 (CVE-2023-33952)

  - kernel: r592: 争用条件导致 r592_remove() 中发生释放后使用 (CVE-2023-35825)

  - 内核：eBPF：dynptr 中的堆栈类型检查不充分 (CVE-2023-39191)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

AlmaLinux 9.2 主机上存在安装的程序包，该程序包受到 TuxCare ALMALINUX9.2：CLSA-2026：2026：1787307395公告中提及的多个漏洞的影响。

  - 已修复 Linux 内核中的下列漏洞：ftrace: Clean up hash direct_functions on register failures We see the following GPF when register_ftrace_direct fails: [ ] general protection fault, probably for non-canonical address \ 0x200000000000010: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI [...] [ ] RIP: 0010:ftrace_find_rec_direct+0x53/0x70 [ ] Code: 48 c1 e0 03 48 03 42 08 48 8b 10 31 c0 48 85 d2 74 [...] [ ] RSP: 0018:ffffc9000138bc10 EFLAGS: 00010206 [ ] RAX: 0000000000000000 RBX:
    ffffffff813e0df0 RCX: 000000000000003b [ ] RDX: 0200000000000000 RSI: 000000000000000c RDI:
    ffffffff813e0df0 [ ] RBP: ffffffffa00a3000 R08: ffffffff81180ce0 R09: 0000000000000001 [ ] R10:
    ffffc9000138bc18 R11: 0000000000000001 R12: ffffffff813e0df0 [ ] R13: ffffffff813e0df0 R14:
    ffff888171b56400 R15: 0000000000000000 [ ] FS: 00007fa9420c7780(0000) GS:ffff888ff6a00000(0000) knlGS:000000000 [ ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ ] CR2: 000000000770d000 CR3:
    0000000107d50003 CR4: 0000000000370ee0 [ ] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
    0000000000000000 [ ] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ ] Call Trace: [ ] <TASK> [ ] register_ftrace_direct+0x54/0x290 [ ] ? render_sigset_t+0xa0/0xa0 [ ] bpf_trampoline_update+0x3f5/0x4a0 [ ] ? 0xffffffffa00a3000 [ ] bpf_trampoline_link_prog+0xa9/0x140 [ ] bpf_tracing_prog_attach+0x1dc/0x450 [ ] bpf_raw_tracepoint_open+0x9a/0x1e0 [ ] ? find_held_lock+0x2d/0x90 [ ] ? lock_release+0x150/0x430 [ ] __sys_bpf+0xbd6/0x2700 [ ] ? lock_is_held_type+0xd8/0x130 [ ]
    __x64_sys_bpf+0x1c/0x20 [ ] do_syscall_64+0x3a/0x80 [ ] entry_SYSCALL_64_after_hwframe+0x44/0xae [ ] RIP:
    0033:0x7fa9421defa9 [ ] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 9 f8 [...] [ ] RSP:
    002b:00007ffed743bd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ ] RAX: ffffffffffffffda RBX:
    00000000069d2480 RCX: 00007fa9421defa9 [ ] RDX: 0000000000000078 RSI: 00007ffed743bd80 RDI:
    0000000000000011 [ ] RBP: 00007ffed743be00 R08: 0000000000bb7270 R09: 0000000000000000 [ ] R10:
    00000000069da210 R11: 0000000000000246 R12: 0000000000000001 [ ] R13: 00007ffed743c4b0 R14:
    00000000069d2480 R15: 0000000000000001 [ ] </TASK> [ ] Modules linked in: klp_vm(OK) [ ] ---[ end trace 0000000000000000 ]--- One way to trigger this is: 1. load a livepatch that patches kernel function xxx; 2.
    run bpftrace -e 'kfunc:xxx {}', this will fail (expected for now); 3. repeat #2 => gpf. This is because the entry is added to direct_functions, but not removed. Fix this by remove the entry from direct_functions when register_ftrace_direct fails. Also remove the last trailing space from ftrace.c, so we don't have to worry about it anymore. (CVE-2022-49402)

  - 已修复 Linux 内核中的下列漏洞：irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions of_find_node_by_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.
    (CVE-2022-49715)

  - 已修复 Linux 内核中的下列漏洞：cpufreq: CPPC: Add u64 casts to avoid overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

  - 已修复 Linux 内核中的下列漏洞：net: stream: purge sk_error_queue in sk_stream_kill_queues() Changheon Lee reported TCP socket leaks, with a nice repro. It seems we leak TCP sockets with the following sequence: 1) SOF_TIMESTAMPING_TX_ACK is enabled on the socket. Each ACK will cook an skb put in error queue, from __skb_tstamp_tx(). __skb_tstamp_tx() is using skb_clone(), unless SOF_TIMESTAMPING_OPT_TSONLY was also requested. 2) If the application is also using MSG_ZEROCOPY, then we put in the error queue cloned skbs that had a struct ubuf_info attached to them. Whenever an struct ubuf_info is allocated, sock_zerocopy_alloc() does a sock_hold(). As long as the cloned skbs are still in sk_error_queue, socket refcount is kept elevated. 3) Application closes the socket, while error queue is not empty. Since tcp_close() no longer purges the socket error queue, we might end up with a TCP socket with at least one skb in error queue keeping the socket alive forever. This bug can be (ab)used to consume all kernel memory and freeze the host. We need to purge the error queue, with proper synchronization against concurrent writers. (CVE-2022-50838)

  - 已修复 Linux 内核中的下列漏洞：bpf: Add preempt_count_{sub,add} into btf id deny list The recursion check in __bpf_prog_enter* and __bpf_prog_exit* leave preempt_count_{sub,add} unprotected. When attaching trampoline to them we get panic as follows, [867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28) [ 867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI [867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4 [ 867.843100] Call Trace: [867.843101] <TASK> [ 867.843104] asm_exc_int3+0x3a/0x40 [ 867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0 [ 867.843135] __bpf_prog_enter_recur+0x17/0x90 [ 867.843148] bpf_trampoline_6442468108_0+0x2e/0x1000 [867.843154] ? preempt_count_sub+0x1/0xa0 [ 867.843157] preempt_count_sub+0x5/0xa0 [ 867.843159] ? migrate_enable+0xac/0xf0 [ 867.843164] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843168] bpf_trampoline_6442468108_0+0x55/0x1000 ... [ 867.843788] preempt_count_sub+0x5/0xa0 [ 867.843793] ? migrate_enable+0xac/0xf0 [ 867.843829] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35) [ 867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c) [ 867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec) [867.843842] bpf_trampoline_6442468108_0+0x55/0x1000 ... That is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are called after prog->active is decreased. Fixing this by adding these two functions into btf ids deny list. (CVE-2023-54086)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

遠端 Redhat Enterprise Linux 9 主機上安裝的套件受到 RHSA-2023:6583 公告中提及的多個弱點影響。

  - kernel：記憶體管理員中的裝置私人頁面發生錯誤時發生爭用 (CVE-2022-3523)

  - kernel：l1oip 計時器處置程式中的釋放後使用 (CVE-2022-3565)

  - kernel：intr_callback 中 r8152 的速率限制溢位訊息 (CVE-2022-3594)

  - kernel: vmwgfx：vmw_cmd_res_check 中出現釋放後使用 (CVE-2022-38457)

  - kernel: vmwgfx：vmw_execbuf_tie_context 中出現釋放後使用 (CVE-2022-40133)

  - hw：Intel：Gather Data Sampling (GDS) 側通道弱點 (CVE-2022-40982)

  - 核心：net/bluetooth/l2cap_core.c 的 l2cap_parse_conf_req 中包含資訊洩漏弱點 (CVE-2022-42895)

  - kernel: x86/mm：隨機化 per-cpu 項目區域 (CVE-2023-0597)

  - kernel: HID：檢查 hid_validate_values() 中的空 report_list (CVE-2023-1073)

  - kernel: sctp：如果沒有邊界位址可用於指定範圍則失敗 (CVE-2023-1074)

  - kernel: net/tls：tls_is_tx_ready() 已檢查 list_entry (CVE-2023-1075)

  - kernel: tap: tap_open()：正確初始化通訊端 uid (CVE-2023-1076)

  - kernel: hid：asus_remove() 中的釋放後使用 (CVE-2023-1079)

  - kernel：IPv6 連線查閱表格中的雜湊衝突 (CVE-2023-1206)

  - kernel：file_files_note 中遺漏 mmap_lock，如此可能導致 coredump 程式碼中的釋放後使用 (CVE-2023-1249)

  - kernel: ovl：修正結構 ovl_aio_req 中的釋放後使用 (CVE-2023-1252)

  - kernel：fs/nfsd/nfs4proc.c 中的 nfsd4_ssc_setup_dul 發生釋放後使用 (CVE-2023-1652)

  - kernel：移除函式 xgene_hwmon_remove 中的釋放後使用錯誤 (CVE-2023-1855)

  - kernel：由於爭用情形在 btsdio_remove 中發生釋放後使用錯誤 (CVE-2023-1989)

  - kernel：dm-ioctl.c 的 dm_get_inactive_table 中可能存有死結，進而導致 dos (CVE-2023-2269)

  - kernel：r592_remove 中發生釋放後使用錯誤 (CVE-2023-3141)

  - kernel: fbcon：fbcon_set_font() 中發生移位超出邊界 (CVE-2023-3161)

  - kernel: gfs2：gfs2_evict_inode() 中的 NULL 指標解除參照 (CVE-2023-3212)

  - kernel：relay_file_read 中的超出邊界存取 (CVE-2023-3268)

  - kernel：由於在 shtp_cl_get_dma_send_buf() 中遺漏 kalloc() 傳回值檢查，進而發生 NULL 指標解除參照 (CVE-2023-3358)

  - kernel: net/sched：tcf_change_indev() 失敗時，發生 cls_u32 元件參照計數器洩漏 (CVE-2023-3609)

  - kernel: xfrm：xfrm_update_ae_params() 中的 NULL 指標解除參照 (CVE-2023-3772)

  - kernel: xfrm：XFRMA_MTIMER_THRESH nlattr 的超出邊界讀取 (CVE-2023-3773)

  - kernel: KVM：SEV-ES / SEV-SNP VMGEXIT 雙重擷取弱點 (CVE-2023-4155)

  - kernel: tap: tap_open()：正確地將 i_uid 的通訊端 uid 下次修正初始化為 current_fsuid (CVE-2023-4194)

  - kernel: net/sched：cls_fw、cls_u32 和 cls_route 分類器中的釋放後使用弱點 (CVE-2023-4206、CVE-2023-4207、CVE-2023-4208)

  - kernel: exFAT：exfat_get_uniname_from_ext_entry 中的堆疊溢位 (CVE-2023-4273)

  - kernel: mpls：sysctl 配置失敗時發生重複釋放 (CVE-2023-26545)

  - kernel: KVM: nVMX：缺少 CR0 和 CR4 的一致性檢查 (CVE-2023-30456)

   kernel: net: qcom/emac：導致 emac_remove() 中發生釋放後使用的爭用情形 (CVE-2023-33203)

  - kernel: vmwgfx：導致資訊洩漏弱點的爭用情形 (CVE-2023-33951)

  - kernel: vmwgfx：處理 vmw_buffer_object 物件時存在釋放後使用問題 (CVE-2023-33952)

  - kernel: r592：導致 r592_remove() 中發生釋放後使用的爭用情形 (CVE-2023-35825)

  - 核心：eBPF：dynptr 中的堆疊類型檢查不充分弱點 (CVE-2023-39191)

請注意，Nessus 並未測試這些問題，而是僅根據應用程式自我報告的版本號碼作出判斷。

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。

  - Linux カーネルでは、以下の脆弱性が解決されています: cpufreq: CPPC: Add u64 casts to avoid overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

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。

AlmaLinux 9.2 ホストには、TuxCare ALMALINUX9.2:CLSA-2026:1787307395アドバイザリに記載されている複数の脆弱性の影響を受けるパッケージがインストールされています。

  - Linux カーネルでは、以下の脆弱性が解決されています: ftrace: Clean up hash direct_functions on register failures We see the following GPF when register_ftrace_direct fails: [ ] general protection fault, probably for non-canonical address \ 0x200000000000010: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI [...] [ ] RIP: 0010:ftrace_find_rec_direct+0x53/0x70 [ ] Code: 48 c1 e0 03 48 03 42 08 48 8b 10 31 c0 48 85 d2 74 [...] [ ] RSP: 0018:ffffc9000138bc10 EFLAGS: 00010206 [ ] RAX: 0000000000000000 RBX:
    ffffffff813e0df0 RCX: 000000000000003b [ ] RDX: 0200000000000000 RSI: 000000000000000c RDI:
    ffffffff813e0df0 [ ] RBP: ffffffffa00a3000 R08: ffffffff81180ce0 R09: 0000000000000001 [ ] R10:
    ffffc9000138bc18 R11: 0000000000000001 R12: ffffffff813e0df0 [ ] R13: ffffffff813e0df0 R14:
    ffff888171b56400 R15: 0000000000000000 [ ] FS: 00007fa9420c7780(0000) GS:ffff888ff6a00000(0000) knlGS:000000000 [ ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ ] CR2: 000000000770d000 CR3:
    0000000107d50003 CR4: 0000000000370ee0 [ ] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
    0000000000000000 [ ] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ ] Call Trace: [ ] <TASK> [ ] register_ftrace_direct+0x54/0x290 [ ] ? render_sigset_t+0xa0/0xa0 [ ] bpf_trampoline_update+0x3f5/0x4a0 [ ] ? 0xffffffffa00a3000 [ ] bpf_trampoline_link_prog+0xa9/0x140 [ ] bpf_tracing_prog_attach+0x1dc/0x450 [ ] bpf_raw_tracepoint_open+0x9a/0x1e0 [ ] ? find_held_lock+0x2d/0x90 [ ] ? lock_release+0x150/0x430 [ ] __sys_bpf+0xbd6/0x2700 [ ] ? lock_is_held_type+0xd8/0x130 [ ]
    __x64_sys_bpf+0x1c/0x20 [ ] do_syscall_64+0x3a/0x80 [ ] entry_SYSCALL_64_after_hwframe+0x44/0xae [ ] RIP:
    0033:0x7fa9421defa9 [ ] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 9 f8 [...] [ ] RSP:
    002b:00007ffed743bd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ ] RAX: ffffffffffffffda RBX:
    00000000069d2480 RCX: 00007fa9421defa9 [ ] RDX: 0000000000000078 RSI: 00007ffed743bd80 RDI:
    0000000000000011 [ ] RBP: 00007ffed743be00 R08: 0000000000bb7270 R09: 0000000000000000 [ ] R10:
    00000000069da210 R11: 0000000000000246 R12: 0000000000000001 [ ] R13: 00007ffed743c4b0 R14:
    00000000069d2480 R15: 0000000000000001 [ ] </TASK> [ ] Modules linked in: klp_vm(OK) [ ] ---[ end trace 0000000000000000 ]--- One way to trigger this is: 1. load a livepatch that patches kernel function xxx; 2.
    run bpftrace -e 'kfunc:xxx {}', this will fail (expected for now); 3. repeat #2 => gpf. This is because the entry is added to direct_functions, but not removed. Fix this by remove the entry from direct_functions when register_ftrace_direct fails. Also remove the last trailing space from ftrace.c, so we don't have to worry about it anymore. (CVE-2022-49402)

  - Linux カーネルでは、以下の脆弱性が解決されています: irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions of_find_node_by_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.
    (CVE-2022-49715)

  - Linux カーネルでは、以下の脆弱性が解決されています: cpufreq: CPPC: Add u64 casts to avoid overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

  - Linux カーネルでは、以下の脆弱性が解決されています: net: stream: purge sk_error_queue in sk_stream_kill_queues() Changheon Lee reported TCP socket leaks, with a nice repro. It seems we leak TCP sockets with the following sequence: 1) SOF_TIMESTAMPING_TX_ACK is enabled on the socket. Each ACK will cook an skb put in error queue, from __skb_tstamp_tx(). __skb_tstamp_tx() is using skb_clone(), unless SOF_TIMESTAMPING_OPT_TSONLY was also requested. 2) If the application is also using MSG_ZEROCOPY, then we put in the error queue cloned skbs that had a struct ubuf_info attached to them. Whenever an struct ubuf_info is allocated, sock_zerocopy_alloc() does a sock_hold(). As long as the cloned skbs are still in sk_error_queue, socket refcount is kept elevated. 3) Application closes the socket, while error queue is not empty. Since tcp_close() no longer purges the socket error queue, we might end up with a TCP socket with at least one skb in error queue keeping the socket alive forever. This bug can be (ab)used to consume all kernel memory and freeze the host. We need to purge the error queue, with proper synchronization against concurrent writers. (CVE-2022-50838)

  - Linux カーネルでは、以下の脆弱性が解決されています: bpf: Add preempt_count_{sub,add} into btf id deny list The recursion check in __bpf_prog_enter* and __bpf_prog_exit* leave preempt_count_{sub,add} unprotected. When attaching trampoline to them we get panic as follows, [867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28) [ 867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI [867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4 [ 867.843100] Call Trace: [867.843101] <TASK> [ 867.843104] asm_exc_int3+0x3a/0x40 [ 867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0 [ 867.843135] __bpf_prog_enter_recur+0x17/0x90 [ 867.843148] bpf_trampoline_6442468108_0+0x2e/0x1000 [867.843154] ? preempt_count_sub+0x1/0xa0 [ 867.843157] preempt_count_sub+0x5/0xa0 [ 867.843159] ? migrate_enable+0xac/0xf0 [ 867.843164] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843168] bpf_trampoline_6442468108_0+0x55/0x1000 ... [ 867.843788] preempt_count_sub+0x5/0xa0 [ 867.843793] ? migrate_enable+0xac/0xf0 [ 867.843829] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35) [ 867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c) [ 867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec) [867.843842] bpf_trampoline_6442468108_0+0x55/0x1000 ... That is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are called after prog->active is decreased. Fixing this by adding these two functions into btf ids deny list. (CVE-2023-54086)

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が自己報告するバージョン番号にのみ依存していることに注意してください。

リモート Redhat Enterprise Linux 9 ホストに、RHSA-2023:6583 アドバイザリに記載されている複数の脆弱性の影響を受けるパッケージがインストールされています。

  - Kernel: メモリマネージャーでデバイスプライベートページに障害が発生したときの競合 (CVE-2022-3523)

  - kernel: l1oip タイマーハンドラーでのメモリ解放後使用 (Use After Free) (CVE-2022-3565)

  - kernel: intr_callback の r8152 のレート制限オーバーフローメッセージ (CVE-2022-3594)

  - kernel: vmwgfx: vmw_cmd_res_check でのメモリ解放後使用 (Use After Free) (CVE-2022-38457)

  - kernel: vmwgfx: vmw_execbuf_tie_context でのメモリ解放後使用 (Use After Free) (CVE-2022-40133)

  - hw: Intel: Gather Data Sampling (GDS) のサイドチャネル脆弱性 (CVE-2022-40982)

  - kernel: net/bluetooth/l2cap_core.c 内の l2cap_parse_conf_req における情報漏洩 (CVE-2022-42895)

  - kernel: x86/mm: cpu ごとのエントリ領域をランダム化します (CVE-2023-0597)

  - kernel: HID: hid_validate_values() の空の report_list をチェックします (CVE-2023-1073)

  - kernel: sctp: 所定のスコープに対して使用できるバインドアドレスがない場合に失敗 (CVE-2023-1074)

  - kernel: net/tls: tls_is_tx_ready() が list_entry をチェックしました (CVE-2023-1075)

  - kernel: tap: tap_open(): ソケット uid を正しく初期化 (CVE-2023-1076)

  - kernel: hid: asus_remove() のメモリ解放後使用 (Use After Free) (CVE-2023-1079)

  - kernel: IPv6 接続検索テーブルにおけるハッシュ衝突 (CVE-2023-1206)

  - kernel: file_files_note に mmap_lock がありません。これにより、coredump コードのメモリ解放後使用 (Use After Free) につながる可能性があります (CVE-2023-1249)

  - kernel: ovl: struct ovl_aio_req のメモリ解放後使用 (Use After Free) を修正します (CVE-2023-1252)

  - kernel: fs/nfsd/nfs4proc.c の nfsd4_ssc_setup_dul におけるメモリ解放後使用 (Use After Free) (CVE-2023-1652)

  - kernel: 関数削除 xgene_hwmon_remove のメモリ解放後使用 (Use After Free) のバグ (CVE-2023-1855)

  - kernel: 競合状態による btsdio_remove でのメモリ解放誤使用 (Use After Free) (CVE-2023-1989)

  - kernel: dm- ioctl.c の dm_get_inactive_table での、dos の原因となるデッドロックの可能性 (CVE-2023-2269)

  - kernel: r592_remove におけるメモリ解放後使用 (Use After Free) バグ (CVE-2023-3141)

  - kernel: fbcon: fbcon_set_font() の領域外シフト (CVE-2023-3161)

  - kernel: gfs2: gfs2_evict_inode() の NULL ポインターデリファレンス (CVE-2023-3212)

  - kernel: relay_file_read における領域外アクセス (CVE-2023-3268)

  - kernel: shtp_cl_get_dma_send_buf() における kalloc() 戻り値チェックの欠落による、NULL ポインターデリファレンス (CVE-2023-3358)

  - kernel: net/sched: tcf_change_indev() が失敗した場合の cls_u32 コンポーネントの参照カウンターの漏洩 (CVE-2023-3609)

  - kernel: xfrm: xfrm_update_ae_params() の NULL ポインターデリファレンス (CVE-2023-3772)

  - kernel: xfrm: XFRMA_MTIMER_THRESH nlattr の領域外読み取り (CVE-2023-3773)

  - kernel: KVM: SEV-ES / SEV-SNP VMGEXIT ダブルフェッチの脆弱性 (CVE-2023-4155)

  - kernel: tap: tap_open(): ソケット uid を正しく初期化 current_fsuid への i_uid の次の修正 (CVE-2023-4194)

  - kernel: net/sched: net/sched 分類子のメモリ解放後使用 (Use After Free) の脆弱性: cls_fw、cls_u32 および cls_route (CVE-2023-4206、CVE-2023-4207、CVE-2023-4208)

  - kernel: exFAT: exfat_get_uniname_from_ext_entry のスタックオーバーフロー (CVE-2023-4273)

  - kernel: mpls: sysctl 割り当てエラーでの二重解放 (CVE-2023-26545)

  - kernel: KVM: nVMX: CR0 および CR4 の一貫性チェックの欠落 (CVE-2023-30456)

  - kernel: net: qcom/emac: emac_remove() でのメモリ解放後使用 (Use After Free) につながる競合状態 (CVE-2023-33203)

  - kernel: vmwgfx: 情報漏洩の脆弱性につながる競合状態 (CVE-2023-33951)

  - kernel: vmwgfx: vmw_buffer_object オブジェクトの処理内での二重解放 (CVE-2023-33952)

  - kernel: r592: r592_remove() でのメモリ解放後使用 (Use After Free) につながる競合状態 (CVE-2023-35825)

  - kernel: eBPF: dynptr における不十分なスタックタイプチェック (CVE-2023-39191)

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が自己報告するバージョン番号にのみ依存していることに注意してください。

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

  - In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Add u64 casts to avoid     overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:6583 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)

    * kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and     cls_route (CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)

    * kernel: eBPF: insufficient stack type checks in dynptr (CVE-2023-39191)

    * Kernel: race when faulting a device private page in memory manager (CVE-2022-3523)

    * kernel: use-after-free in l1oip timer handlers (CVE-2022-3565)

    * kernel: Rate limit overflow messages in r8152 in intr_callback (CVE-2022-3594)

    * kernel: vmwgfx: use-after-free in vmw_cmd_res_check (CVE-2022-38457)

    * kernel: vmwgfx: use-after-free in vmw_execbuf_tie_context (CVE-2022-40133)

    * hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)

    * kernel: Information leak in l2cap_parse_conf_req in net/bluetooth/l2cap_core.c (CVE-2022-42895)

    * kernel: x86/mm: Randomize per-cpu entry area (CVE-2023-0597)

    * kernel: HID: check empty report_list in hid_validate_values() (CVE-2023-1073)

    * kernel: sctp: fail if no bound addresses can be used for a given scope (CVE-2023-1074)

    * kernel: hid: Use After Free in asus_remove() (CVE-2023-1079)

    * kernel: hash collisions in the IPv6 connection lookup table (CVE-2023-1206)

    * kernel: ovl: fix use after free in struct ovl_aio_req (CVE-2023-1252)

    * Kernel: use-after-free in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c (CVE-2023-1652)

    * kernel: Use after free bug in btsdio_remove due to race condition (CVE-2023-1989)

    * kernel: fbcon: shift-out-of-bounds in fbcon_set_font() (CVE-2023-3161)

    * kernel: out-of-bounds access in relay_file_read (CVE-2023-3268)

    * kernel: xfrm: NULL pointer dereference in xfrm_update_ae_params() (CVE-2023-3772)

    * kernel: xfrm: out-of-bounds read of XFRMA_MTIMER_THRESH nlattr (CVE-2023-3773)

    * kernel: KVM: SEV-ES / SEV-SNP VMGEXIT double fetch vulnerability (CVE-2023-4155)

    * kernel: exFAT: stack overflow in exfat_get_uniname_from_ext_entry (CVE-2023-4273)

    * kernel: mpls: double free on sysctl allocation failure (CVE-2023-26545)

    * kernel: KVM: nVMX: missing consistency checks for CR0 and CR4 (CVE-2023-30456)

    * kernel: net: qcom/emac: race condition leading to use-after-free in emac_remove() (CVE-2023-33203)

    * kernel: vmwgfx: race condition leading to information disclosure vulnerability (CVE-2023-33951)

    * kernel: vmwgfx: double free within the handling of vmw_buffer_object objects (CVE-2023-33952)

    * kernel: r592: race condition leading to use-after-free in r592_remove() (CVE-2023-35825)

    * kernel: net/tls: tls_is_tx_ready() checked list_entry (CVE-2023-1075)

    * kernel: tap: tap_open(): correctly initialize socket uid (CVE-2023-1076)

    * kernel: missing mmap_lock in file_files_note that could possibly lead to a use after free in the     coredump code (CVE-2023-1249)

    * kernel: use-after-free bug in remove function xgene_hwmon_remove (CVE-2023-1855)

    * kernel: Use after free bug in r592_remove (CVE-2023-3141)

    * kernel: gfs2: NULL pointer dereference in gfs2_evict_inode() (CVE-2023-3212)

    * kernel: NULL pointer dereference due to missing kalloc() return value check in     shtp_cl_get_dma_send_buf() (CVE-2023-3358)

    * kernel: tap: tap_open(): correctly initialize socket uid next fix of i_uid to current_fsuid     (CVE-2023-4194)

    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 9.3 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.

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1787307395 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: ftrace: Clean up hash direct_functions     on register failures We see the following GPF when register_ftrace_direct fails: [ ] general protection     fault, probably for non-canonical address \ 0x200000000000010: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI     [...] [ ] RIP: 0010:ftrace_find_rec_direct+0x53/0x70 [ ] Code: 48 c1 e0 03 48 03 42 08 48 8b 10 31 c0 48     85 d2 74 [...] [ ] RSP: 0018:ffffc9000138bc10 EFLAGS: 00010206 [ ] RAX: 0000000000000000 RBX:
    ffffffff813e0df0 RCX: 000000000000003b [ ] RDX: 0200000000000000 RSI: 000000000000000c RDI:
    ffffffff813e0df0 [ ] RBP: ffffffffa00a3000 R08: ffffffff81180ce0 R09: 0000000000000001 [ ] R10:
    ffffc9000138bc18 R11: 0000000000000001 R12: ffffffff813e0df0 [ ] R13: ffffffff813e0df0 R14:
    ffff888171b56400 R15: 0000000000000000 [ ] FS: 00007fa9420c7780(0000) GS:ffff888ff6a00000(0000)     knlGS:000000000 [ ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ ] CR2: 000000000770d000 CR3:
    0000000107d50003 CR4: 0000000000370ee0 [ ] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
    0000000000000000 [ ] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ ] Call Trace: [ ]     <TASK> [ ] register_ftrace_direct+0x54/0x290 [ ] ? render_sigset_t+0xa0/0xa0 [ ]     bpf_trampoline_update+0x3f5/0x4a0 [ ] ? 0xffffffffa00a3000 [ ] bpf_trampoline_link_prog+0xa9/0x140 [ ]     bpf_tracing_prog_attach+0x1dc/0x450 [ ] bpf_raw_tracepoint_open+0x9a/0x1e0 [ ] ? find_held_lock+0x2d/0x90     [ ] ? lock_release+0x150/0x430 [ ] __sys_bpf+0xbd6/0x2700 [ ] ? lock_is_held_type+0xd8/0x130 [ ]
    __x64_sys_bpf+0x1c/0x20 [ ] do_syscall_64+0x3a/0x80 [ ] entry_SYSCALL_64_after_hwframe+0x44/0xae [ ] RIP:
    0033:0x7fa9421defa9 [ ] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 9 f8 [...] [ ] RSP:
    002b:00007ffed743bd78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ ] RAX: ffffffffffffffda RBX:
    00000000069d2480 RCX: 00007fa9421defa9 [ ] RDX: 0000000000000078 RSI: 00007ffed743bd80 RDI:
    0000000000000011 [ ] RBP: 00007ffed743be00 R08: 0000000000bb7270 R09: 0000000000000000 [ ] R10:
    00000000069da210 R11: 0000000000000246 R12: 0000000000000001 [ ] R13: 00007ffed743c4b0 R14:
    00000000069d2480 R15: 0000000000000001 [ ] </TASK> [ ] Modules linked in: klp_vm(OK) [ ] ---[ end trace     0000000000000000 ]--- One way to trigger this is: 1. load a livepatch that patches kernel function xxx; 2.
    run bpftrace -e 'kfunc:xxx {}', this will fail (expected for now); 3. repeat #2 => gpf. This is because     the entry is added to direct_functions, but not removed. Fix this by remove the entry from     direct_functions when register_ftrace_direct fails. Also remove the last trailing space from ftrace.c, so     we don't have to worry about it anymore. (CVE-2022-49402)

  - In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Fix refcount leak in     gic_populate_ppi_partitions of_find_node_by_phandle() returns a node pointer with refcount incremented, we     should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.
    (CVE-2022-49715)

  - In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Add u64 casts to avoid     overflowing The fields of the _CPC object are unsigned 32-bits values. To avoid overflows while using
    _CPC's values, add 'u64' casts. (CVE-2022-49750)

  - In the Linux kernel, the following vulnerability has been resolved: net: stream: purge sk_error_queue in     sk_stream_kill_queues() Changheon Lee reported TCP socket leaks, with a nice repro. It seems we leak TCP     sockets with the following sequence: 1) SOF_TIMESTAMPING_TX_ACK is enabled on the socket. Each ACK will     cook an skb put in error queue, from __skb_tstamp_tx(). __skb_tstamp_tx() is using skb_clone(), unless     SOF_TIMESTAMPING_OPT_TSONLY was also requested. 2) If the application is also using MSG_ZEROCOPY, then we     put in the error queue cloned skbs that had a struct ubuf_info attached to them. Whenever an struct     ubuf_info is allocated, sock_zerocopy_alloc() does a sock_hold(). As long as the cloned skbs are still in     sk_error_queue, socket refcount is kept elevated. 3) Application closes the socket, while error queue is     not empty. Since tcp_close() no longer purges the socket error queue, we might end up with a TCP socket     with at least one skb in error queue keeping the socket alive forever. This bug can be (ab)used to consume     all kernel memory and freeze the host. We need to purge the error queue, with proper synchronization     against concurrent writers. (CVE-2022-50838)

  - In the Linux kernel, the following vulnerability has been resolved: bpf: Add preempt_count_{sub,add} into     btf id deny list The recursion check in __bpf_prog_enter* and __bpf_prog_exit* leave     preempt_count_{sub,add} unprotected. When attaching trampoline to them we get panic as follows, [     867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is     0000000046a46a15..00000000537e7b28) [ 867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI [     867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4 [ 867.843100] Call Trace: [     867.843101] <TASK> [ 867.843104] asm_exc_int3+0x3a/0x40 [ 867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0     [ 867.843135] __bpf_prog_enter_recur+0x17/0x90 [ 867.843148] bpf_trampoline_6442468108_0+0x2e/0x1000 [     867.843154] ? preempt_count_sub+0x1/0xa0 [ 867.843157] preempt_count_sub+0x5/0xa0 [ 867.843159] ?     migrate_enable+0xac/0xf0 [ 867.843164] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843168]     bpf_trampoline_6442468108_0+0x55/0x1000 ... [ 867.843788] preempt_count_sub+0x5/0xa0 [ 867.843793] ?     migrate_enable+0xac/0xf0 [ 867.843829] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843837] BUG: IRQ stack guard     page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35) [ 867.843841] BUG: IRQ     stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c) [ 867.843843]     BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec) [     867.843842] bpf_trampoline_6442468108_0+0x55/0x1000 ... That is because in __bpf_prog_exit_recur, the     preempt_count_{sub,add} are called after prog->active is decreased. Fixing this by adding these two     functions into btf ids deny list. (CVE-2023-54086)

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
246024	Linux Distros 未修补的漏洞：CVE-2022-49750	Nessus	Misc.	2025/8/8	2026/10/21	medium
361223	AlmaLinux 9.2 [TuxCare] 安全性更新：bpftool / kernel / kernel-abi-stablelists / kernel-core / etc 多個弱點（ALMALINUX9.2：CLSA-2026：1787307395）	Nessus	Alma Linux Local Security Checks	2026/10/1	2026/10/1	medium
246024	Linux Distros 未修補弱點：CVE-2022-49750	Nessus	Misc.	2025/8/8	2026/10/21	medium
194262	RHEL 9：kernel (RHSA-2023:6583)	Nessus	Red Hat Local Security Checks	2024/4/28	2025/10/28	high
361223	AlmaLinux 9.2 [TuxCare] 安全更新：bpftool / kernel / kernel-abi-stablelists / kernel-core / 等多个漏洞（ALMALINUX9.2：CLSA-2026：1787307395）	Nessus	Alma Linux Local Security Checks	2026/10/1	2026/10/1	medium
194262	RHEL 9：kernel (RHSA-2023:6583)	Nessus	Red Hat Local Security Checks	2024/4/28	2025/10/28	high
246024	Linux Distros のパッチ未適用の脆弱性: CVE-2022-49750	Nessus	Misc.	2025/8/8	2026/10/21	medium
361223	AlmaLinux 9.2 [TuxCare] セキュリティ更新プログラム:bpftool/kernel/kernel-abi-stablelists/kernel-core/etcの複数の脆弱性(ALMALINUX9.2:CLSA-2026:1787307395)	Nessus	Alma Linux Local Security Checks	2026/10/1	2026/10/1	medium
194262	RHEL 9 : kernel (RHSA-2023:6583)	Nessus	Red Hat Local Security Checks	2024/4/28	2025/10/28	high
246024	Linux Distros Unpatched Vulnerability : CVE-2022-49750	Nessus	Misc.	2025/8/8	2026/10/21	medium
194262	RHEL 9 : kernel (RHSA-2023:6583)	Nessus	Red Hat Local Security Checks	2024/4/28	2025/10/28	high
361223	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1787307395)	Nessus	Alma Linux Local Security Checks	2026/10/1	2026/10/1	medium

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