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CVE-2024-40981— 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 batman-adv 组件在 batadv_purge_orig_ref 函数中可能存在软锁死问题。

AI 预测 5.5 利用难度: 中等 EPSS 0.23% · P13

影响版本矩阵 18

厂商产品 版本范围状态
Linux Linux fb778ea173fcd58b8fc3d75c674f07fab187b55f< 79636f636126775436a11ee9cf00a9253a33ac11 affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< 154e3f862ba33675cf3f4abf0a0a309a89df87d2 affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< 82cdea8f3af1e36543c937df963d108c60bea030 affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< 92176caf9896572f00e741a93cecc0ef1172da07 affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< fed7914858a1f1f3e6350bb0f620d6ef15107d16 affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< 2685008a5f9a636434a8508419cee8158a2f52c8 affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< ae7f3cffe86aea3da0e8e079525a1ae619b8862a affected
fb778ea173fcd58b8fc3d75c674f07fab187b55f< 40dc8ab605894acae1473e434944924a22cfaaa0 affected
… +10 条更多
获取后续新漏洞提醒 登录后订阅

一、 漏洞 CVE-2024-40981 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗

尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。

Vulnerability Title
batman-adv: bypass empty buckets in batadv_purge_orig_ref()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bypass empty buckets in batadv_purge_orig_ref() Many syzbot reports are pointing to soft lockups in batadv_purge_orig_ref() [1] Root cause is unknown, but we can avoid spending too much time there and perhaps get more interesting reports. [1] watchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:6:621] Modules linked in: irq event stamp: 6182794 hardirqs last enabled at (6182793): [<ffff8000801dae10>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 hardirqs last disabled at (6182794): [<ffff80008ad66a78>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (6182794): [<ffff80008ad66a78>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (6182792): [<ffff80008aab71c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (6182792): [<ffff80008aab71c4>] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287 softirqs last disabled at (6182790): [<ffff80008aab61dc>] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (6182790): [<ffff80008aab61dc>] batadv_purge_orig_ref+0x164/0x1228 net/batman-adv/originator.c:1271 CPU: 0 PID: 621 Comm: kworker/u4:6 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: bat_events batadv_purge_orig pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline] pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388 lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 sp : ffff800099007970 x29: ffff800099007980 x28: 1fffe00018fce1bd x27: dfff800000000000 x26: ffff0000d2620008 x25: ffff0000c7e70de8 x24: 0000000000000001 x23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4 x20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: 1fffe0001a817bb0 x17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001 x14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 00000000005e5789 x7 : ffff80008aab61dc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : 0000000000000080 x0 : ffff800125414000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable arch/arm64/include/asm/irqflags.h:49 [inline] __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:386 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287 batadv_purge_orig+0x20/0x70 net/batman-adv/originator.c:1300 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:103 sp : ffff800093a17d30 x29: ffff800093a17d30 x28: dfff800000000000 x27: 1ffff00012742fb4 x26: ffff80008ec9d000 x25: 0000000000000000 x24: 0000000000000002 x23: 1ffff00011d93a74 x22: ffff80008ec9d3a0 x21: 0000000000000000 x20: ffff0000c19dbc00 x19: ffff8000802d0fd8 x18: 1fffe00036804396 x17: ffff80008ec9d000 x16: ffff8000802d089c x15: 0000000000000001 ---truncated---
来源: CVE Program / CVE List V5
CVSS Information
N/A
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 batman-adv 组件在 batadv_purge_orig_ref 函数中可能存在软锁死问题。
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

厂商 产品 影响版本 CPE 订阅
Linux Linux fb778ea173fcd58b8fc3d75c674f07fab187b55f ~ 79636f636126775436a11ee9cf00a9253a33ac11 -
Linux Linux 2.6.39 -

二、漏洞 CVE-2024-40981 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2024-40981 的情报信息

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CVE-2024-40981 其他参考 (8)

同批安全公告 · Linux · 2024-07-12 · 共 122 条

CVE-2024-40937 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-40907 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-40999 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-40923 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-40983 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-40910 8.8 HIGH Linux kernel 安全漏洞
CVE-2024-40911 8.8 HIGH Linux kernel 安全漏洞
CVE-2024-40941 8.1 HIGH Linux kernel 安全漏洞
CVE-2024-40953 7.9 HIGH Linux kernel 安全漏洞
CVE-2024-40947 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40970 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40909 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40949 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40991 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40990 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40943 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40984 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40924 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40986 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-40925 7.8 HIGH Linux kernel 安全漏洞

显示前 20 条，共 122 条。 查看全部 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-40981

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