AlmaLinux 9.2 主機已安裝的套件會受到 TuxCare ALMALINUX9.2：CLSA-2026：1786761805 公告中提及的多個弱點影響。

  - 在 KVM 的 AMD 巢狀虛擬化 (SVM) 中發現一個缺陷。惡意的 L1 來賓可有意放棄攔截合作巢狀來賓 (L2) 的關機動作，這可能導致主機 (L0) 中發生索引標籤錯誤和核心錯誤。(CVE-2022-3344)

  - 已解決 Linux 核心中的下列弱點：usbnet: Run unregister_netdev() before unbind() again Commit 2c9d6c2b871d (usbnet: run unbind() before unregister_netdev()) sought to fix a use-after-free on disconnect of USB Ethernet adapters. It turns out that a different fix is necessary to address the issue:
    https://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@wunner.de/ So the commit was not necessary. The commit made binding and unbinding of USB Ethernet asymmetrical: Before, usbnet_probe() first invoked the ->bind() callback and then register_netdev(). usbnet_disconnect() mirrored that by first invoking unregister_netdev() and then ->unbind(). Since the commit, the order in usbnet_disconnect() is reversed and no longer mirrors usbnet_probe(). One consequence is that a PHY disconnected (and stopped) in ->unbind() is afterwards stopped once more by unregister_netdev() as it closes the netdev before unregistering. That necessitates a contortion in ->stop() because the PHY may only be stopped if it hasn't already been disconnected. Reverting the commit allows making the call to phy_stop() unconditional in ->stop(). (CVE-2022-49501)

  - 已解決 Linux 核心中的下列弱點：crypto: arm64/poly1305 - fix a read out-of-bound A kasan error was reported during fuzzing: BUG: KASAN: slab-out-of-bounds in neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] Read of size 4 at addr ffff0010e293f010 by task syz-executor.5/1646715 CPU: 4 PID: 1646715 Comm: syz-executor.5 Kdump: loaded Not tainted 5.10.0.aarch64 #1 Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.59 01/31/2019 Call trace:
    dump_backtrace+0x0/0x394 show_stack+0x34/0x4c arch/arm64/kernel/stacktrace.c:196 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x158/0x1e4 lib/dump_stack.c:118 print_address_description.constprop.0+0x68/0x204 mm/kasan/report.c:387 __kasan_report+0xe0/0x140 mm/kasan/report.c:547 kasan_report+0x44/0xe0 mm/kasan/report.c:564 check_memory_region_inline mm/kasan/generic.c:187 [inline] __asan_load4+0x94/0xd0 mm/kasan/generic.c:252 neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] neon_poly1305_do_update+0x6c/0x15c [poly1305_neon] neon_poly1305_update+0x9c/0x1c4 [poly1305_neon] crypto_shash_update crypto/shash.c:131 [inline] shash_finup_unaligned+0x84/0x15c crypto/shash.c:179 crypto_shash_finup+0x8c/0x140 crypto/shash.c:193 shash_digest_unaligned+0xb8/0xe4 crypto/shash.c:201 crypto_shash_digest+0xa4/0xfc crypto/shash.c:217 crypto_shash_tfm_digest+0xb4/0x150 crypto/shash.c:229 essiv_skcipher_setkey+0x164/0x200 [essiv] crypto_skcipher_setkey+0xb0/0x160 crypto/skcipher.c:612 skcipher_setkey+0x3c/0x50 crypto/algif_skcipher.c:305 alg_setkey+0x114/0x2a0 crypto/af_alg.c:220 alg_setsockopt+0x19c/0x210 crypto/af_alg.c:253 __sys_setsockopt+0x190/0x2e0 net/socket.c:2123 __do_sys_setsockopt net/socket.c:2134 [inline] __se_sys_setsockopt net/socket.c:2131 [inline] __arm64_sys_setsockopt+0x78/0x94 net/socket.c:2131
    __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline] invoke_syscall+0x64/0x100 arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0x220/0x230 arch/arm64/kernel/syscall.c:155 do_el0_svc+0xb4/0xd4 arch/arm64/kernel/syscall.c:217 el0_svc+0x24/0x3c arch/arm64/kernel/entry-common.c:353 el0_sync_handler+0x160/0x164 arch/arm64/kernel/entry-common.c:369 el0_sync+0x160/0x180 arch/arm64/kernel/entry.S:683 This error can be reproduced by the following code compiled as ko on a system with kasan enabled: #include <linux/module.h> #include <linux/crypto.h> #include <crypto/hash.h> #include <crypto/poly1305.h> char test_data[] = \x00\x01\x02\x03\x04\x05\x06\x07 \x08\x09\x0a\x0b\x0c\x0d\x0e\x0f \x10\x11\x12\x13\x14\x15\x16\x17 \x18\x19\x1a\x1b\x1c\x1d\x1e; int init(void) { struct crypto_shash *tfm = NULL; char *data = NULL, *out = NULL; tfm = crypto_alloc_shash(poly1305, 0, 0); data = kmalloc(POLY1305_KEY_SIZE - 1, GFP_KERNEL); out = kmalloc(POLY1305_DIGEST_SIZE, GFP_KERNEL); memcpy(data, test_data, POLY1305_KEY_SIZE - 1);
    crypto_shash_tfm_digest(tfm, data, POLY1305_KEY_SIZE - 1, out); kfree(data); kfree(out); return 0; } void deinit(void) { } module_init(init) module_exit(deinit) MODULE_LICENSE(GPL); The root cause of the bug sits in neon_poly1305_blocks. The logic neon_poly1305_blocks() performed is that if it was called with both s[] and r[] uninitialized, it will first try to initialize them with the data from the first block that it believed to be 32 bytes in length. First 16 bytes are used as the key and the next 16 bytes for s[]. This would lead to the aforementioned read out-of-bound. However, after calling poly1305_init_arch(), only 16 bytes were deducted from the input and s[] is initialized yet again with the following 16 bytes.
    The second initialization of s[] is certainly redundent which indicates that the first initialization should be for r[] only. This patch fixes the issue by calling poly1305_init_arm64() instead o
    ---truncated--- (CVE-2022-50231)

  - 已解決 Linux 核心中的下列弱點：bpf: Fix reference state management for synchronous callbacks Currently, verifier verifies callback functions (sync and async) as if they will be executed once, (i.e. it explores execution state as if the function was being called once). The next insn to explore is set to start of subprog and the exit from nested frame is handled using curframe > 0 and prepare_func_exit. In case of async callback it uses a customized variant of push_stack simulating a kind of branch to set up custom state and execution context for the async callback. While this approach is simple and works when callback really will be executed only once, it is unsafe for all of our current helpers which are for_each style, i.e. they execute the callback multiple times. A callback releasing acquired references of the caller may do so multiple times, but currently verifier sees it as one call inside the frame, which then returns to caller. Hence, it thinks it released some reference that the cb e.g. got access through callback_ctx (register filled inside cb from spilled typed register on stack).
    Similarly, it may see that an acquire call is unpaired inside the callback, so the caller will copy the reference state of callback and then will have to release the register with new ref_obj_ids. But again, the callback may execute multiple times, but the verifier will only account for acquired references for a single symbolic execution of the callback, which will cause leaks. Note that for async callback case, things are different. While currently we have bpf_timer_set_callback which only executes it once, even for multiple executions it would be safe, as reference state is NULL and check_reference_leak would force program to release state before BPF_EXIT. The state is also unaffected by analysis for the caller frame.
    Hence async callback is safe. Since we want the reference state to be accessible, e.g. for pointers loaded from stack through callback_ctx's PTR_TO_STACK, we still have to copy caller's reference_state to callback's bpf_func_state, but we enforce that whatever references it adds to that reference_state has been released before it hits BPF_EXIT. This requires introducing a new callback_ref member in the reference state to distinguish between caller vs callee references. Hence, check_reference_leak now errors out if it sees we are in callback_fn and we have not released callback_ref refs. Since there can be multiple nested callbacks, like frame 0 -> cb1 -> cb2 etc. we need to also distinguish between whether this particular ref belongs to this callback frame or parent, and only error for our own, so we store state->frameno (which is always non-zero for callbacks). In short, callbacks can read parent reference_state, but cannot mutate it, to be able to use pointers acquired by the caller. They must only undo their changes (by releasing their own acquired_refs before BPF_EXIT) on top of caller reference_state before returning (at which point the caller and callback state will match anyway, so no need to copy it back to caller). (CVE-2022-50650)

  - 已解決 Linux 核心中的下列弱點：net: stmmac: fix possible memory leak in stmmac_dvr_probe() The bitmap_free() should be called to free priv->af_xdp_zc_qps when create_singlethread_workqueue() fails, otherwise there will be a memory leak, so we add the err path error_wq_init to fix it. (CVE-2022-50663)

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。

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：U 1786761805公告中提及的多个漏洞的影响。

  - 在 KVM 的 AMD 嵌套虚拟化 (SVM) 中发现一个缺陷。恶意的 L1 客户机可能故意无法拦截协作嵌套客户机 (L2) 的关闭，从而可能导致主机 (L0) 中出现页面错误和内核错误。(CVE-2022-3344)

  - 已修复 Linux 内核中的下列漏洞：usbnet: Run unregister_netdev() before unbind() again Commit 2c9d6c2b871d (usbnet: run unbind() before unregister_netdev()) sought to fix a use-after-free on disconnect of USB Ethernet adapters. It turns out that a different fix is necessary to address the issue:
    https://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@wunner.de/ So the commit was not necessary. The commit made binding and unbinding of USB Ethernet asymmetrical: Before, usbnet_probe() first invoked the ->bind() callback and then register_netdev(). usbnet_disconnect() mirrored that by first invoking unregister_netdev() and then ->unbind(). Since the commit, the order in usbnet_disconnect() is reversed and no longer mirrors usbnet_probe(). One consequence is that a PHY disconnected (and stopped) in ->unbind() is afterwards stopped once more by unregister_netdev() as it closes the netdev before unregistering. That necessitates a contortion in ->stop() because the PHY may only be stopped if it hasn't already been disconnected. Reverting the commit allows making the call to phy_stop() unconditional in ->stop(). (CVE-2022-49501)

  - 已修复 Linux 内核中的下列漏洞：crypto: arm64/poly1305 - fix a read out-of-bound A kasan error was reported during fuzzing: BUG: KASAN: slab-out-of-bounds in neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] Read of size 4 at addr ffff0010e293f010 by task syz-executor.5/1646715 CPU: 4 PID: 1646715 Comm: syz-executor.5 Kdump: loaded Not tainted 5.10.0.aarch64 #1 Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.59 01/31/2019 Call trace:
    dump_backtrace+0x0/0x394 show_stack+0x34/0x4c arch/arm64/kernel/stacktrace.c:196 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x158/0x1e4 lib/dump_stack.c:118 print_address_description.constprop.0+0x68/0x204 mm/kasan/report.c:387 __kasan_report+0xe0/0x140 mm/kasan/report.c:547 kasan_report+0x44/0xe0 mm/kasan/report.c:564 check_memory_region_inline mm/kasan/generic.c:187 [inline] __asan_load4+0x94/0xd0 mm/kasan/generic.c:252 neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] neon_poly1305_do_update+0x6c/0x15c [poly1305_neon] neon_poly1305_update+0x9c/0x1c4 [poly1305_neon] crypto_shash_update crypto/shash.c:131 [inline] shash_finup_unaligned+0x84/0x15c crypto/shash.c:179 crypto_shash_finup+0x8c/0x140 crypto/shash.c:193 shash_digest_unaligned+0xb8/0xe4 crypto/shash.c:201 crypto_shash_digest+0xa4/0xfc crypto/shash.c:217 crypto_shash_tfm_digest+0xb4/0x150 crypto/shash.c:229 essiv_skcipher_setkey+0x164/0x200 [essiv] crypto_skcipher_setkey+0xb0/0x160 crypto/skcipher.c:612 skcipher_setkey+0x3c/0x50 crypto/algif_skcipher.c:305 alg_setkey+0x114/0x2a0 crypto/af_alg.c:220 alg_setsockopt+0x19c/0x210 crypto/af_alg.c:253 __sys_setsockopt+0x190/0x2e0 net/socket.c:2123 __do_sys_setsockopt net/socket.c:2134 [inline] __se_sys_setsockopt net/socket.c:2131 [inline] __arm64_sys_setsockopt+0x78/0x94 net/socket.c:2131
    __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline] invoke_syscall+0x64/0x100 arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0x220/0x230 arch/arm64/kernel/syscall.c:155 do_el0_svc+0xb4/0xd4 arch/arm64/kernel/syscall.c:217 el0_svc+0x24/0x3c arch/arm64/kernel/entry-common.c:353 el0_sync_handler+0x160/0x164 arch/arm64/kernel/entry-common.c:369 el0_sync+0x160/0x180 arch/arm64/kernel/entry.S:683 This error can be reproduced by the following code compiled as ko on a system with kasan enabled: #include <linux/module.h> #include <linux/crypto.h> #include <crypto/hash.h> #include <crypto/poly1305.h> char test_data[] = \x00\x01\x02\x03\x04\x05\x06\x07 \x08\x09\x0a\x0b\x0c\x0d\x0e\x0f \x10\x11\x12\x13\x14\x15\x16\x17 \x18\x19\x1a\x1b\x1c\x1d\x1e; int init(void) { struct crypto_shash *tfm = NULL; char *data = NULL, *out = NULL; tfm = crypto_alloc_shash(poly1305, 0, 0); data = kmalloc(POLY1305_KEY_SIZE - 1, GFP_KERNEL); out = kmalloc(POLY1305_DIGEST_SIZE, GFP_KERNEL); memcpy(data, test_data, POLY1305_KEY_SIZE - 1);
    crypto_shash_tfm_digest(tfm, data, POLY1305_KEY_SIZE - 1, out); kfree(data); kfree(out); return 0; } void deinit(void) { } module_init(init) module_exit(deinit) MODULE_LICENSE(GPL); The root cause of the bug sits in neon_poly1305_blocks. The logic neon_poly1305_blocks() performed is that if it was called with both s[] and r[] uninitialized, it will first try to initialize them with the data from the first block that it believed to be 32 bytes in length. First 16 bytes are used as the key and the next 16 bytes for s[]. This would lead to the aforementioned read out-of-bound. However, after calling poly1305_init_arch(), only 16 bytes were deducted from the input and s[] is initialized yet again with the following 16 bytes.
    The second initialization of s[] is certainly redundent which indicates that the first initialization should be for r[] only. This patch fixes the issue by calling poly1305_init_arm64() instead o
    ---truncated--- (CVE-2022-50231)

  - 已修复 Linux 内核中的下列漏洞：bpf: Fix reference state management for synchronous callbacks Currently, verifier verifies callback functions (sync and async) as if they will be executed once, (i.e. it explores execution state as if the function was being called once). The next insn to explore is set to start of subprog and the exit from nested frame is handled using curframe > 0 and prepare_func_exit. In case of async callback it uses a customized variant of push_stack simulating a kind of branch to set up custom state and execution context for the async callback. While this approach is simple and works when callback really will be executed only once, it is unsafe for all of our current helpers which are for_each style, i.e. they execute the callback multiple times. A callback releasing acquired references of the caller may do so multiple times, but currently verifier sees it as one call inside the frame, which then returns to caller. Hence, it thinks it released some reference that the cb e.g. got access through callback_ctx (register filled inside cb from spilled typed register on stack).
    Similarly, it may see that an acquire call is unpaired inside the callback, so the caller will copy the reference state of callback and then will have to release the register with new ref_obj_ids. But again, the callback may execute multiple times, but the verifier will only account for acquired references for a single symbolic execution of the callback, which will cause leaks. Note that for async callback case, things are different. While currently we have bpf_timer_set_callback which only executes it once, even for multiple executions it would be safe, as reference state is NULL and check_reference_leak would force program to release state before BPF_EXIT. The state is also unaffected by analysis for the caller frame.
    Hence async callback is safe. Since we want the reference state to be accessible, e.g. for pointers loaded from stack through callback_ctx's PTR_TO_STACK, we still have to copy caller's reference_state to callback's bpf_func_state, but we enforce that whatever references it adds to that reference_state has been released before it hits BPF_EXIT. This requires introducing a new callback_ref member in the reference state to distinguish between caller vs callee references. Hence, check_reference_leak now errors out if it sees we are in callback_fn and we have not released callback_ref refs. Since there can be multiple nested callbacks, like frame 0 -> cb1 -> cb2 etc. we need to also distinguish between whether this particular ref belongs to this callback frame or parent, and only error for our own, so we store state->frameno (which is always non-zero for callbacks). In short, callbacks can read parent reference_state, but cannot mutate it, to be able to use pointers acquired by the caller. They must only undo their changes (by releasing their own acquired_refs before BPF_EXIT) on top of caller reference_state before returning (at which point the caller and callback state will match anyway, so no need to copy it back to caller). (CVE-2022-50650)

  - 已修复 Linux 内核中的下列漏洞：net: stmmac: fix possible memory leak in stmmac_dvr_probe() The bitmap_free() should be called to free priv->af_xdp_zc_qps when create_singlethread_workqueue() fails, otherwise there will be a memory leak, so we add the err path error_wq_init to fix it. (CVE-2022-50663)

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。

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。

  - wifirtw88使用工作更新速率以避免 RCU 警告ieee80211_ops::sta_rc_update 必須為不可部分完成因為 ieee80211_chan_bw_change() 會在呼叫 drv_sta_rc_update() 時保留 rcu_read 鎖定因此請建立工作以執行原始項目。RCU 讀取端重要區段內的自動內容切換警告 CPU: 0 PID: 4621 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x571/0x5d0 CPU: 0 PID: 4621 Comm
    kworker/u16:2 受污染GW OE 工作佇列phy3 ieee80211_chswitch_work [mac80211] RIP
    0010rcu_note_context_switch+0x571/0x5d0 呼叫追踪 <TASK> __schedule+0xb0/0x1460
    __mod_timer+0x116/0x360 schedule+0x5a/0xc0 schedule_timeout+0x87/0x150 ? trace_raw_output_tick_stop+0x60/0x60 wait_for_completion_timeout+0x7b/0x140 usb_start_wait_urb+0x82/0x160 [usbcore usb_control_msg+0xe3/0x140 [usbcore rtw_usb_read+0x88/0xe0 [rtw_usb rtw_usb_read8+0xf/0x10 [rtw_usb rtw_fw_send_h2c_command+0xa0/0x170 [rtw_core rtw_fw_send_ra_info+0xc9/0xf0 [rtw_core drv_sta_rc_update+0x7c/0x160 [mac80211 ieee80211_chan_bw_change+0xfb/0x110 [mac80211 ieee80211_change_chanctx+0x38/0x130 [mac80211 ieee80211_vif_use_reserved_switch+0x34e/0x900 [mac80211 ieee80211_link_use_reserved_context+0x88/0xe0 [mac80211 ieee80211_chswitch_work+0x95/0x170 [mac80211 process_one_work+0x201/0x410 worker_thread +0x4a/0x3b0 ? process_one_work+0x410/0x410 kthread+0xe1/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 </TASK> (CVE-2023-54071)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

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。

  - wifi rtw88使用工作更新速率以避免 RCU 警告 ieee80211_ops::sta_rc_update 必须是原子性的因为 ieee80211_chan_bw_change() 在调用 drv_sta_rc_update() 时会保留 rcu_read 锁定因此创建一个工作来执行原始操作。RCU 读取端关键区段中的主动上下文切换WARNING: CPU: 0 PID: 4621 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x571/0x5d0 CPU: 0 PID: 4621 Comm
    kworker/u16:2 受感染的GW OE Workqueuephy3 ieee80211_chswitch_work [mac80211] RIP
    0010:rcu_note_context_switch+0x571/0x5d0 调用跟踪 <TASK> __schedule+0xb0/0x1460
    __mod_timer+0x116/0x360 schedule+0x5a/0xc0 schedule_timeout+0x87/0x150 ? trace_raw_output_tick_stop+0x60/0x60 wait_for_completion_timeout+0x7b/0x140 usb_start_wait_urb+0x82/0x160 [usbcore usb_control_msg+0xe3/0x140 [usbcore rtw_usb_read+0x88/0xe0 [rtw_usb rtw_usb_read8+0xf/0x10 [rtw_usb rtw_fw_send_h2c_command+0xa0/0x170 [rtw_core rtw_fw_send_ra_info+0xc9/0xf0 [rtw_core drv_sta_rc_update+0x7c/0x160 [mac80211 ieee80211_chan_bw_change+0xfb/0x110 [mac80211 ieee80211_change_chanctx+0x38/0x130 [mac80211 ieee80211_vif_use_reserved_switch+0x34e/0x900 [mac80211 ieee80211_link_use_reserved_context+0x88/0xe0 [mac80211 ieee80211_chswitch_work+0x95/0x170 [mac80211 process_one_work+0x201/0x410 worker_thread +0x4a/0x3b0 ? process_one_work+0x410/0x410 kthread+0xe1/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 </TASK> (CVE-2023-54071)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

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。

  - wifirtw88RCU の警告を回避するためにレートを更新する作業を使用します。ieee80211_chan_bw_change() は drv_sta_rc_update() の呼び出し中に rcu_read ロックを保持するため、ieee80211_ops::sta_rc_update はアトミックにする必要があります。このため、元のことを行うための作業を作成します。RCU リードサイドの重要セクション内の任意のコンテキストスイッチ警告CPU0 PID4621 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x571/0x5d0 CPU0 PID4621 通信
    kworker/u16:2 汚染GW OE ワークキューphy3 ieee80211_chswitch_work [mac80211] RIP
    0010:rcu_note_context_switch+0x571/0x5d0 Call Trace: <TASK> __schedule+0xb0/0x1460 ?
    __mod_timer+0x116/0x360 schedule+0x5a/0xc0 schedule_timeout+0x87/0x150 ? trace_raw_output_tick_stop+0x60/0x60 wait_for_completion_timeout+0x7b/0x140 usb_start_wait_urb+0x82/0x160 [usbcore usb_control_msg+0xe3/0x140 [usbcore rtw_usb_read+0x88/0xe0 [rtw_usb rtw_usb_read8+0xf/0x10 [rtw_usb rtw_fw_send_h2c_command+0xa0/0x170 [rtw_core rtw_fw_send_ra_info+0xc9/0xf0 [rtw_core drv_sta_rc_update+0x7c/0x160 [mac80211 ieee80211_chan_bw_change+0xfb/0x110 [mac80211 ieee80211_change_chanctx+0x38/0x130 [mac80211 ieee80211_vif_use_reserved_switch+0x34e/0x900 [mac80211 ieee80211_link_use_reserved_context+0x88/0xe0 [mac80211 ieee80211_chswitch_work+0x95/0x170 [mac80211 process_one_work+0x201/0x410 worker_thread +0x4a/0x3b0 ? process_one_work+0x410/0x410 kthread+0xe1/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 </TASK>CVE-2023-54071]

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-2026:1786761805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。

  - KVM の AMD ネスト化仮想化 (SVM) に欠陥が見つかりました。悪意のある L1 ゲストが意図的に協調的ネスト化ゲスト (L2) のシャットダウンの傍受に失敗し、ホスト (L0) でページ障害やカーネルパニックを引き起こす可能性があります。(CVE-2022-3344)

  - Linux カーネルでは、以下の脆弱性が解決されています: usbnet: Run unregister_netdev() before unbind() again Commit 2c9d6c2b871d (usbnet: run unbind() before unregister_netdev()) sought to fix a use-after-free on disconnect of USB Ethernet adapters. It turns out that a different fix is necessary to address the issue:
    https://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@wunner.de/ So the commit was not necessary. The commit made binding and unbinding of USB Ethernet asymmetrical: Before, usbnet_probe() first invoked the ->bind() callback and then register_netdev(). usbnet_disconnect() mirrored that by first invoking unregister_netdev() and then ->unbind(). Since the commit, the order in usbnet_disconnect() is reversed and no longer mirrors usbnet_probe(). One consequence is that a PHY disconnected (and stopped) in ->unbind() is afterwards stopped once more by unregister_netdev() as it closes the netdev before unregistering. That necessitates a contortion in ->stop() because the PHY may only be stopped if it hasn't already been disconnected. Reverting the commit allows making the call to phy_stop() unconditional in ->stop(). (CVE-2022-49501)

  - Linux カーネルでは、以下の脆弱性が解決されています: crypto: arm64/poly1305 - fix a read out-of-bound A kasan error was reported during fuzzing: BUG: KASAN: slab-out-of-bounds in neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] Read of size 4 at addr ffff0010e293f010 by task syz-executor.5/1646715 CPU: 4 PID: 1646715 Comm: syz-executor.5 Kdump: loaded Not tainted 5.10.0.aarch64 #1 Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.59 01/31/2019 Call trace:
    dump_backtrace+0x0/0x394 show_stack+0x34/0x4c arch/arm64/kernel/stacktrace.c:196 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x158/0x1e4 lib/dump_stack.c:118 print_address_description.constprop.0+0x68/0x204 mm/kasan/report.c:387 __kasan_report+0xe0/0x140 mm/kasan/report.c:547 kasan_report+0x44/0xe0 mm/kasan/report.c:564 check_memory_region_inline mm/kasan/generic.c:187 [inline] __asan_load4+0x94/0xd0 mm/kasan/generic.c:252 neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] neon_poly1305_do_update+0x6c/0x15c [poly1305_neon] neon_poly1305_update+0x9c/0x1c4 [poly1305_neon] crypto_shash_update crypto/shash.c:131 [inline] shash_finup_unaligned+0x84/0x15c crypto/shash.c:179 crypto_shash_finup+0x8c/0x140 crypto/shash.c:193 shash_digest_unaligned+0xb8/0xe4 crypto/shash.c:201 crypto_shash_digest+0xa4/0xfc crypto/shash.c:217 crypto_shash_tfm_digest+0xb4/0x150 crypto/shash.c:229 essiv_skcipher_setkey+0x164/0x200 [essiv] crypto_skcipher_setkey+0xb0/0x160 crypto/skcipher.c:612 skcipher_setkey+0x3c/0x50 crypto/algif_skcipher.c:305 alg_setkey+0x114/0x2a0 crypto/af_alg.c:220 alg_setsockopt+0x19c/0x210 crypto/af_alg.c:253 __sys_setsockopt+0x190/0x2e0 net/socket.c:2123 __do_sys_setsockopt net/socket.c:2134 [inline] __se_sys_setsockopt net/socket.c:2131 [inline] __arm64_sys_setsockopt+0x78/0x94 net/socket.c:2131
    __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline] invoke_syscall+0x64/0x100 arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0x220/0x230 arch/arm64/kernel/syscall.c:155 do_el0_svc+0xb4/0xd4 arch/arm64/kernel/syscall.c:217 el0_svc+0x24/0x3c arch/arm64/kernel/entry-common.c:353 el0_sync_handler+0x160/0x164 arch/arm64/kernel/entry-common.c:369 el0_sync+0x160/0x180 arch/arm64/kernel/entry.S:683 This error can be reproduced by the following code compiled as ko on a system with kasan enabled: #include <linux/module.h> #include <linux/crypto.h> #include <crypto/hash.h> #include <crypto/poly1305.h> char test_data[] = \x00\x01\x02\x03\x04\x05\x06\x07 \x08\x09\x0a\x0b\x0c\x0d\x0e\x0f \x10\x11\x12\x13\x14\x15\x16\x17 \x18\x19\x1a\x1b\x1c\x1d\x1e; int init(void) { struct crypto_shash *tfm = NULL; char *data = NULL, *out = NULL; tfm = crypto_alloc_shash(poly1305, 0, 0); data = kmalloc(POLY1305_KEY_SIZE - 1, GFP_KERNEL); out = kmalloc(POLY1305_DIGEST_SIZE, GFP_KERNEL); memcpy(data, test_data, POLY1305_KEY_SIZE - 1);
    crypto_shash_tfm_digest(tfm, data, POLY1305_KEY_SIZE - 1, out); kfree(data); kfree(out); return 0; } void deinit(void) { } module_init(init) module_exit(deinit) MODULE_LICENSE(GPL); The root cause of the bug sits in neon_poly1305_blocks. The logic neon_poly1305_blocks() performed is that if it was called with both s[] and r[] uninitialized, it will first try to initialize them with the data from the first block that it believed to be 32 bytes in length. First 16 bytes are used as the key and the next 16 bytes for s[]. This would lead to the aforementioned read out-of-bound. However, after calling poly1305_init_arch(), only 16 bytes were deducted from the input and s[] is initialized yet again with the following 16 bytes.
    The second initialization of s[] is certainly redundent which indicates that the first initialization should be for r[] only. This patch fixes the issue by calling poly1305_init_arm64() instead o
    ---truncated--- (CVE-2022-50231)

  - Linux カーネルでは、以下の脆弱性が解決されています: bpf: Fix reference state management for synchronous callbacks Currently, verifier verifies callback functions (sync and async) as if they will be executed once, (i.e. it explores execution state as if the function was being called once). The next insn to explore is set to start of subprog and the exit from nested frame is handled using curframe > 0 and prepare_func_exit. In case of async callback it uses a customized variant of push_stack simulating a kind of branch to set up custom state and execution context for the async callback. While this approach is simple and works when callback really will be executed only once, it is unsafe for all of our current helpers which are for_each style, i.e. they execute the callback multiple times. A callback releasing acquired references of the caller may do so multiple times, but currently verifier sees it as one call inside the frame, which then returns to caller. Hence, it thinks it released some reference that the cb e.g. got access through callback_ctx (register filled inside cb from spilled typed register on stack).
    Similarly, it may see that an acquire call is unpaired inside the callback, so the caller will copy the reference state of callback and then will have to release the register with new ref_obj_ids. But again, the callback may execute multiple times, but the verifier will only account for acquired references for a single symbolic execution of the callback, which will cause leaks. Note that for async callback case, things are different. While currently we have bpf_timer_set_callback which only executes it once, even for multiple executions it would be safe, as reference state is NULL and check_reference_leak would force program to release state before BPF_EXIT. The state is also unaffected by analysis for the caller frame.
    Hence async callback is safe. Since we want the reference state to be accessible, e.g. for pointers loaded from stack through callback_ctx's PTR_TO_STACK, we still have to copy caller's reference_state to callback's bpf_func_state, but we enforce that whatever references it adds to that reference_state has been released before it hits BPF_EXIT. This requires introducing a new callback_ref member in the reference state to distinguish between caller vs callee references. Hence, check_reference_leak now errors out if it sees we are in callback_fn and we have not released callback_ref refs. Since there can be multiple nested callbacks, like frame 0 -> cb1 -> cb2 etc. we need to also distinguish between whether this particular ref belongs to this callback frame or parent, and only error for our own, so we store state->frameno (which is always non-zero for callbacks). In short, callbacks can read parent reference_state, but cannot mutate it, to be able to use pointers acquired by the caller. They must only undo their changes (by releasing their own acquired_refs before BPF_EXIT) on top of caller reference_state before returning (at which point the caller and callback state will match anyway, so no need to copy it back to caller). (CVE-2022-50650)

  - Linux カーネルでは、以下の脆弱性が解決されています: net: stmmac: fix possible memory leak in stmmac_dvr_probe() The bitmap_free() should be called to free priv->af_xdp_zc_qps when create_singlethread_workqueue() fails, otherwise there will be a memory leak, so we add the err path error_wq_init to fix it. (CVE-2022-50663)

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.

  - wifi: rtw88: use work to update rate to avoid RCU warning The ieee80211_ops::sta_rc_update must be atomic,     because ieee80211_chan_bw_change() holds rcu_read lock while calling drv_sta_rc_update(), so create a work     to do original things. Voluntary context switch within RCU read-side critical section! WARNING: CPU: 0     PID: 4621 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x571/0x5d0 CPU: 0 PID: 4621 Comm:
    kworker/u16:2 Tainted: G W OE Workqueue: phy3 ieee80211_chswitch_work [mac80211] RIP:
    0010:rcu_note_context_switch+0x571/0x5d0 Call Trace: <TASK> __schedule+0xb0/0x1460 ?
    __mod_timer+0x116/0x360 schedule+0x5a/0xc0 schedule_timeout+0x87/0x150 ?     trace_raw_output_tick_stop+0x60/0x60 wait_for_completion_timeout+0x7b/0x140 usb_start_wait_urb+0x82/0x160     [usbcore usb_control_msg+0xe3/0x140 [usbcore rtw_usb_read+0x88/0xe0 [rtw_usb rtw_usb_read8+0xf/0x10     [rtw_usb rtw_fw_send_h2c_command+0xa0/0x170 [rtw_core rtw_fw_send_ra_info+0xc9/0xf0 [rtw_core     drv_sta_rc_update+0x7c/0x160 [mac80211 ieee80211_chan_bw_change+0xfb/0x110 [mac80211     ieee80211_change_chanctx+0x38/0x130 [mac80211 ieee80211_vif_use_reserved_switch+0x34e/0x900 [mac80211     ieee80211_link_use_reserved_context+0x88/0xe0 [mac80211 ieee80211_chswitch_work+0x95/0x170 [mac80211     process_one_work+0x201/0x410 worker_thread+0x4a/0x3b0 ? process_one_work+0x410/0x410 kthread+0xe1/0x110 ?     kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 </TASK> (CVE-2023-54071)

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

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1786761805 advisory.

  - A flaw was found in the KVM's AMD nested virtualization (SVM). A malicious L1 guest could purposely fail     to intercept the shutdown of a cooperative nested guest (L2), possibly leading to a page fault and kernel     panic in the host (L0). (CVE-2022-3344)

  - In the Linux kernel, the following vulnerability has been resolved: usbnet: Run unregister_netdev() before     unbind() again Commit 2c9d6c2b871d (usbnet: run unbind() before unregister_netdev()) sought to fix a     use-after-free on disconnect of USB Ethernet adapters. It turns out that a different fix is necessary to     address the issue:
    https://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@wunner.de/ So     the commit was not necessary. The commit made binding and unbinding of USB Ethernet asymmetrical: Before,     usbnet_probe() first invoked the ->bind() callback and then register_netdev(). usbnet_disconnect()     mirrored that by first invoking unregister_netdev() and then ->unbind(). Since the commit, the order in     usbnet_disconnect() is reversed and no longer mirrors usbnet_probe(). One consequence is that a PHY     disconnected (and stopped) in ->unbind() is afterwards stopped once more by unregister_netdev() as it     closes the netdev before unregistering. That necessitates a contortion in ->stop() because the PHY may     only be stopped if it hasn't already been disconnected. Reverting the commit allows making the call to     phy_stop() unconditional in ->stop(). (CVE-2022-49501)

  - In the Linux kernel, the following vulnerability has been resolved: crypto: arm64/poly1305 - fix a read     out-of-bound A kasan error was reported during fuzzing: BUG: KASAN: slab-out-of-bounds in     neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] Read of size 4 at addr ffff0010e293f010 by     task syz-executor.5/1646715 CPU: 4 PID: 1646715 Comm: syz-executor.5 Kdump: loaded Not tainted     5.10.0.aarch64 #1 Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.59 01/31/2019 Call trace:
    dump_backtrace+0x0/0x394 show_stack+0x34/0x4c arch/arm64/kernel/stacktrace.c:196 __dump_stack     lib/dump_stack.c:77 [inline] dump_stack+0x158/0x1e4 lib/dump_stack.c:118     print_address_description.constprop.0+0x68/0x204 mm/kasan/report.c:387 __kasan_report+0xe0/0x140     mm/kasan/report.c:547 kasan_report+0x44/0xe0 mm/kasan/report.c:564 check_memory_region_inline     mm/kasan/generic.c:187 [inline] __asan_load4+0x94/0xd0 mm/kasan/generic.c:252     neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] neon_poly1305_do_update+0x6c/0x15c     [poly1305_neon] neon_poly1305_update+0x9c/0x1c4 [poly1305_neon] crypto_shash_update crypto/shash.c:131     [inline] shash_finup_unaligned+0x84/0x15c crypto/shash.c:179 crypto_shash_finup+0x8c/0x140     crypto/shash.c:193 shash_digest_unaligned+0xb8/0xe4 crypto/shash.c:201 crypto_shash_digest+0xa4/0xfc     crypto/shash.c:217 crypto_shash_tfm_digest+0xb4/0x150 crypto/shash.c:229 essiv_skcipher_setkey+0x164/0x200     [essiv] crypto_skcipher_setkey+0xb0/0x160 crypto/skcipher.c:612 skcipher_setkey+0x3c/0x50     crypto/algif_skcipher.c:305 alg_setkey+0x114/0x2a0 crypto/af_alg.c:220 alg_setsockopt+0x19c/0x210     crypto/af_alg.c:253 __sys_setsockopt+0x190/0x2e0 net/socket.c:2123 __do_sys_setsockopt net/socket.c:2134     [inline] __se_sys_setsockopt net/socket.c:2131 [inline] __arm64_sys_setsockopt+0x78/0x94 net/socket.c:2131
    __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline] invoke_syscall+0x64/0x100     arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0x220/0x230 arch/arm64/kernel/syscall.c:155     do_el0_svc+0xb4/0xd4 arch/arm64/kernel/syscall.c:217 el0_svc+0x24/0x3c arch/arm64/kernel/entry-     common.c:353 el0_sync_handler+0x160/0x164 arch/arm64/kernel/entry-common.c:369 el0_sync+0x160/0x180     arch/arm64/kernel/entry.S:683 This error can be reproduced by the following code compiled as ko on a     system with kasan enabled: #include <linux/module.h> #include <linux/crypto.h> #include <crypto/hash.h>     #include <crypto/poly1305.h> char test_data[] = \x00\x01\x02\x03\x04\x05\x06\x07     \x08\x09\x0a\x0b\x0c\x0d\x0e\x0f \x10\x11\x12\x13\x14\x15\x16\x17 \x18\x19\x1a\x1b\x1c\x1d\x1e; int     init(void) { struct crypto_shash *tfm = NULL; char *data = NULL, *out = NULL; tfm =     crypto_alloc_shash(poly1305, 0, 0); data = kmalloc(POLY1305_KEY_SIZE - 1, GFP_KERNEL); out =     kmalloc(POLY1305_DIGEST_SIZE, GFP_KERNEL); memcpy(data, test_data, POLY1305_KEY_SIZE - 1);
    crypto_shash_tfm_digest(tfm, data, POLY1305_KEY_SIZE - 1, out); kfree(data); kfree(out); return 0; } void     deinit(void) { } module_init(init) module_exit(deinit) MODULE_LICENSE(GPL); The root cause of the bug     sits in neon_poly1305_blocks. The logic neon_poly1305_blocks() performed is that if it was called with     both s[] and r[] uninitialized, it will first try to initialize them with the data from the first block     that it believed to be 32 bytes in length. First 16 bytes are used as the key and the next 16 bytes for     s[]. This would lead to the aforementioned read out-of-bound. However, after calling poly1305_init_arch(),     only 16 bytes were deducted from the input and s[] is initialized yet again with the following 16 bytes.
    The second initialization of s[] is certainly redundent which indicates that the first initialization     should be for r[] only. This patch fixes the issue by calling poly1305_init_arm64() instead o
    ---truncated--- (CVE-2022-50231)

  - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference state management     for synchronous callbacks Currently, verifier verifies callback functions (sync and async) as if they will     be executed once, (i.e. it explores execution state as if the function was being called once). The next     insn to explore is set to start of subprog and the exit from nested frame is handled using curframe > 0     and prepare_func_exit. In case of async callback it uses a customized variant of push_stack simulating a     kind of branch to set up custom state and execution context for the async callback. While this approach is     simple and works when callback really will be executed only once, it is unsafe for all of our current     helpers which are for_each style, i.e. they execute the callback multiple times. A callback releasing     acquired references of the caller may do so multiple times, but currently verifier sees it as one call     inside the frame, which then returns to caller. Hence, it thinks it released some reference that the cb     e.g. got access through callback_ctx (register filled inside cb from spilled typed register on stack).
    Similarly, it may see that an acquire call is unpaired inside the callback, so the caller will copy the     reference state of callback and then will have to release the register with new ref_obj_ids. But again,     the callback may execute multiple times, but the verifier will only account for acquired references for a     single symbolic execution of the callback, which will cause leaks. Note that for async callback case,     things are different. While currently we have bpf_timer_set_callback which only executes it once, even for     multiple executions it would be safe, as reference state is NULL and check_reference_leak would force     program to release state before BPF_EXIT. The state is also unaffected by analysis for the caller frame.
    Hence async callback is safe. Since we want the reference state to be accessible, e.g. for pointers loaded     from stack through callback_ctx's PTR_TO_STACK, we still have to copy caller's reference_state to     callback's bpf_func_state, but we enforce that whatever references it adds to that reference_state has     been released before it hits BPF_EXIT. This requires introducing a new callback_ref member in the     reference state to distinguish between caller vs callee references. Hence, check_reference_leak now errors     out if it sees we are in callback_fn and we have not released callback_ref refs. Since there can be     multiple nested callbacks, like frame 0 -> cb1 -> cb2 etc. we need to also distinguish between whether     this particular ref belongs to this callback frame or parent, and only error for our own, so we store     state->frameno (which is always non-zero for callbacks). In short, callbacks can read parent     reference_state, but cannot mutate it, to be able to use pointers acquired by the caller. They must only     undo their changes (by releasing their own acquired_refs before BPF_EXIT) on top of caller reference_state     before returning (at which point the caller and callback state will match anyway, so no need to copy it     back to caller). (CVE-2022-50650)

  - In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix possible memory leak     in stmmac_dvr_probe() The bitmap_free() should be called to free priv->af_xdp_zc_qps when     create_singlethread_workqueue() fails, otherwise there will be a memory leak, so we add the err path     error_wq_init to fix it. (CVE-2022-50663)

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

ID	Name	Product	Family	Published	Updated	Severity
352031	AlmaLinux 9.2 [TuxCare] 安全性更新：bpftool / kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc 多個弱點（ALMALINUX9.2：CLSA-2026：1786761805）	Nessus	Alma Linux Local Security Checks	9/30/2026	10/19/2026	critical
352031	AlmaLinux 9.2 [TuxCare] 安全更新：bpftool / kernel / kernel-64k / kernel-64k-core / kernel-64k-debug 等多个漏洞（ALMALINUX9.2：CLSA-2026：1786761805）	Nessus	Alma Linux Local Security Checks	9/30/2026	10/19/2026	critical
279879	Linux Distros 未修補的弱點：CVE-2023-54071	Nessus	Misc.	12/25/2025	9/30/2026	high
279879	Linux Distros 未修补的漏洞：CVE-2023-54071	Nessus	Misc.	12/25/2025	9/30/2026	high
279879	Linux Distros のパッチ未適用の脆弱性: CVE-2023-54071	Nessus	Misc.	12/25/2025	9/30/2026	high
352031	AlmaLinux 9.2 [TuxCare] セキュリティ更新プログラム:bpftool/kernel/kernel-64k/kernel-64k-core/kernel-64k-debug/etc複数の脆弱性(ALMALINUX9.2:CLSA-2026:1786761805)	Nessus	Alma Linux Local Security Checks	9/30/2026	10/19/2026	critical
279879	Linux Distros Unpatched Vulnerability : CVE-2023-54071	Nessus	Misc.	12/25/2025	9/30/2026	high
352031	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1786761805)	Nessus	Alma Linux Local Security Checks	9/30/2026	10/19/2026	critical

Detections

Analytics

Plugins Search

critical

critical

high

high

high

critical

high

critical