CVE-2024-50035— 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ppp组件在ppp_async_encode函数中的非法访问。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4151ec65abd755133ebec687218fadd2d2631167 |
affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8dfe93901b410ae41264087427f3b9f389388f83 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 30d91a478d58cbae3dbaa8224d17d0d839f0d71b |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< fadf8fdb3110d3138e05c3765f645535434f8d76 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ce249a4c68d0ce27a8c5d853338d502e2711a314 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8fe992ff3df493d1949922ca234419f3ede08dff |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c007a14797240607038bd3464501109f408940e2 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 40dddd4b8bd08a69471efd96107a4e1c73fabefc |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2024-50035 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！
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Vulnerability Title
ppp: fix ppp_async_encode() illegal access
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ppp: fix ppp_async_encode() illegal access
syzbot reported an issue in ppp_async_encode() [1]
In this case, pppoe_sendmsg() is called with a zero size.
Then ppp_async_encode() is called with an empty skb.
BUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]
BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675
ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline]
ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675
ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634
ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline]
ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304
pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379
sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113
__release_sock+0x1da/0x330 net/core/sock.c:3072
release_sock+0x6b/0x250 net/core/sock.c:3626
pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x30f/0x380 net/socket.c:744
____sys_sendmsg+0x903/0xb60 net/socket.c:2602
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656
__sys_sendmmsg+0x3c1/0x960 net/socket.c:2742
__do_sys_sendmmsg net/socket.c:2771 [inline]
__se_sys_sendmmsg net/socket.c:2768 [inline]
__x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768
x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at:
slab_post_alloc_hook mm/slub.c:4092 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187
kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587
__alloc_skb+0x363/0x7b0 net/core/skbuff.c:678
alloc_skb include/linux/skbuff.h:1322 [inline]
sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732
pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x30f/0x380 net/socket.c:744
____sys_sendmsg+0x903/0xb60 net/socket.c:2602
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656
__sys_sendmmsg+0x3c1/0x960 net/socket.c:2742
__do_sys_sendmmsg net/socket.c:2771 [inline]
__se_sys_sendmmsg net/socket.c:2768 [inline]
__x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768
x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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ppp组件在ppp_async_encode函数中的非法访问。
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-2024-50035 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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未找到公开 POC。
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CVE-2024-50035 补丁与修复 (7)
同批安全公告 · Linux · 2024-10-21 · 共 372 条
| CVE-2024-50033 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-49855 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-47695 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-48985 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49003 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50043 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50047 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50046 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-49996 | 9.4 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-47678 | 9.4 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-48962 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49950 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49939 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48967 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48964 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50029 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49930 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50041 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49936 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48954 | 8.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 372 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-50035
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