CVE-2022-49238— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ath11k在QCA6390和WCN6855断开AP连接时未释放peer导致释放后重用。
可能的 ATT&CK 技术 1 AI
T1211 · Exploitation for Stealth
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一、 漏洞 CVE-2022-49238 基础信息
漏洞信息
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Vulnerability Title
ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
Commit b4a0f54156ac ("ath11k: move peer delete after vdev stop of station
for QCA6390 and WCN6855") is to fix firmware crash by changing the WMI
command sequence, but actually skip all the peer delete operation, then
it lead commit 58595c9874c6 ("ath11k: Fixing dangling pointer issue upon
peer delete failure") not take effect, and then happened a use-after-free
warning from KASAN. because the peer->sta is not set to NULL and then used
later.
Change to only skip the WMI_PEER_DELETE_CMDID for QCA6390/WCN6855.
log of user-after-free:
[ 534.888665] BUG: KASAN: use-after-free in ath11k_dp_rx_update_peer_stats+0x912/0xc10 [ath11k]
[ 534.888696] Read of size 8 at addr ffff8881396bb1b8 by task rtcwake/2860
[ 534.888705] CPU: 4 PID: 2860 Comm: rtcwake Kdump: loaded Tainted: G W 5.15.0-wt-ath+ #523
[ 534.888712] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0067.2021.0528.1339 05/28/2021
[ 534.888716] Call Trace:
[ 534.888720] <IRQ>
[ 534.888726] dump_stack_lvl+0x57/0x7d
[ 534.888736] print_address_description.constprop.0+0x1f/0x170
[ 534.888745] ? ath11k_dp_rx_update_peer_stats+0x912/0xc10 [ath11k]
[ 534.888771] kasan_report.cold+0x83/0xdf
[ 534.888783] ? ath11k_dp_rx_update_peer_stats+0x912/0xc10 [ath11k]
[ 534.888810] ath11k_dp_rx_update_peer_stats+0x912/0xc10 [ath11k]
[ 534.888840] ath11k_dp_rx_process_mon_status+0x529/0xa70 [ath11k]
[ 534.888874] ? ath11k_dp_rx_mon_status_bufs_replenish+0x3f0/0x3f0 [ath11k]
[ 534.888897] ? check_prev_add+0x20f0/0x20f0
[ 534.888922] ? __lock_acquire+0xb72/0x1870
[ 534.888937] ? find_held_lock+0x33/0x110
[ 534.888954] ath11k_dp_rx_process_mon_rings+0x297/0x520 [ath11k]
[ 534.888981] ? rcu_read_unlock+0x40/0x40
[ 534.888990] ? ath11k_dp_rx_pdev_alloc+0xd90/0xd90 [ath11k]
[ 534.889026] ath11k_dp_service_mon_ring+0x67/0xe0 [ath11k]
[ 534.889053] ? ath11k_dp_rx_process_mon_rings+0x520/0x520 [ath11k]
[ 534.889075] call_timer_fn+0x167/0x4a0
[ 534.889084] ? add_timer_on+0x3b0/0x3b0
[ 534.889103] ? lockdep_hardirqs_on_prepare.part.0+0x18c/0x370
[ 534.889117] __run_timers.part.0+0x539/0x8b0
[ 534.889123] ? ath11k_dp_rx_process_mon_rings+0x520/0x520 [ath11k]
[ 534.889157] ? call_timer_fn+0x4a0/0x4a0
[ 534.889164] ? mark_lock_irq+0x1c30/0x1c30
[ 534.889173] ? clockevents_program_event+0xdd/0x280
[ 534.889189] ? mark_held_locks+0xa5/0xe0
[ 534.889203] run_timer_softirq+0x97/0x180
[ 534.889213] __do_softirq+0x276/0x86a
[ 534.889230] __irq_exit_rcu+0x11c/0x180
[ 534.889238] irq_exit_rcu+0x5/0x20
[ 534.889244] sysvec_apic_timer_interrupt+0x8e/0xc0
[ 534.889251] </IRQ>
[ 534.889254] <TASK>
[ 534.889259] asm_sysvec_apic_timer_interrupt+0x12/0x20
[ 534.889265] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70
[ 534.889271] Code: 74 24 10 e8 ea c2 bf fd 48 89 ef e8 12 53 c0 fd 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 13 a7 b5 fd 65 8b 05 cc d9 9c 5e 85 c0 74 0a 5b 5d c3 e8 a0 ee
[ 534.889276] RSP: 0018:ffffc90002e5f880 EFLAGS: 00000206
[ 534.889284] RAX: 0000000000000006 RBX: 0000000000000200 RCX: ffffffff9f256f10
[ 534.889289] RDX: 0000000000000000 RSI: ffffffffa1c6e420 RDI: 0000000000000001
[ 534.889293] RBP: ffff8881095e6200 R08: 0000000000000001 R09: ffffffffa40d2b8f
[ 534.889298] R10: fffffbfff481a571 R11: 0000000000000001 R12: ffff8881095e6e68
[ 534.889302] R13: ffffc90002e5f908 R14: 0000000000000246 R15: 0000000000000000
[ 534.889316] ? mark_lock+0xd0/0x14a0
[ 534.889332] klist_next+0x1d4/0x450
[ 534.889340] ? dpm_wait_for_subordinate+0x2d0/0x2d0
[ 534.889350] device_for_each_child+0xa8/0x140
[ 534.889360] ? device_remove_class_symlinks+0x1b0/0x1b0
[ 534.889370] ? __lock_release+0x4bd/0x9f0
[ 534.889378] ? dpm_suspend+0x26b/0x3f0
[ 534.889390] dpm_wait_for_subordinate+
---truncated---
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ath11k在QCA6390和WCN6855断开AP连接时未释放peer导致释放后重用。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-49238 的公开POC
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CVE-2022-49238 补丁与修复 (2)
同批安全公告 · Linux · 2025-02-26 · 共 706 条
| CVE-2022-49149 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49260 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49201 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49194 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49418 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49094 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49407 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49093 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49561 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49362 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49356 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49280 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49058 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49471 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49519 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49479 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49138 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49500 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49535 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49111 | 8.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 706 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-49238
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