CVE-2024-35870— 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，该漏洞源于内存释放后重用。
可能的 ATT&CK 技术 1 AI
T1211 · Exploitation for Stealth影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | b327a717e506980399464e304e363f94f95eb7a1< 755fe68cd4b59e1d2a2dd3286177fd4404f57fed |
affected |
b327a717e506980399464e304e363f94f95eb7a1< 6202996a1c1887e83d0b3b0fcd86d0e5e6910ea0 |
affected | ||
b327a717e506980399464e304e363f94f95eb7a1< 45f2beda1f1bc3d962ec07db1ccc3197c25499a5 |
affected | ||
b327a717e506980399464e304e363f94f95eb7a1< 24a9799aa8efecd0eb55a75e35f9d8e6400063aa |
affected | ||
4.16 |
affected | ||
< 4.16 |
unaffected | ||
6.1.121≤ 6.1.* |
unaffected | ||
6.6.29≤ 6.6.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2024-35870 基础信息
漏洞信息
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Vulnerability Title
smb: client: fix UAF in smb2_reconnect_server()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix UAF in smb2_reconnect_server()
The UAF bug is due to smb2_reconnect_server() accessing a session that
is already being teared down by another thread that is executing
__cifs_put_smb_ses(). This can happen when (a) the client has
connection to the server but no session or (b) another thread ends up
setting @ses->ses_status again to something different than
SES_EXITING.
To fix this, we need to make sure to unconditionally set
@ses->ses_status to SES_EXITING and prevent any other threads from
setting a new status while we're still tearing it down.
The following can be reproduced by adding some delay to right after
the ipc is freed in __cifs_put_smb_ses() - which will give
smb2_reconnect_server() worker a chance to run and then accessing
@ses->ipc:
kinit ...
mount.cifs //srv/share /mnt/1 -o sec=krb5,nohandlecache,echo_interval=10
[disconnect srv]
ls /mnt/1 &>/dev/null
sleep 30
kdestroy
[reconnect srv]
sleep 10
umount /mnt/1
...
CIFS: VFS: Verify user has a krb5 ticket and keyutils is installed
CIFS: VFS: \\srv Send error in SessSetup = -126
CIFS: VFS: Verify user has a krb5 ticket and keyutils is installed
CIFS: VFS: \\srv Send error in SessSetup = -126
general protection fault, probably for non-canonical address
0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP NOPTI
CPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 6.9.0-rc2 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39
04/01/2014
Workqueue: cifsiod smb2_reconnect_server [cifs]
RIP: 0010:__list_del_entry_valid_or_report+0x33/0xf0
Code: 4f 08 48 85 d2 74 42 48 85 c9 74 59 48 b8 00 01 00 00 00 00 ad
de 48 39 c2 74 61 48 b8 22 01 00 00 00 00 74 69 <48> 8b 01 48 39 f8 75
7b 48 8b 72 08 48 39 c6 0f 85 88 00 00 00 b8
RSP: 0018:ffffc900001bfd70 EFLAGS: 00010a83
RAX: dead000000000122 RBX: ffff88810da53838 RCX: 6b6b6b6b6b6b6b6b
RDX: 6b6b6b6b6b6b6b6b RSI: ffffffffc02f6878 RDI: ffff88810da53800
RBP: ffff88810da53800 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88810c064000
R13: 0000000000000001 R14: ffff88810c064000 R15: ffff8881039cc000
FS: 0000000000000000(0000) GS:ffff888157c00000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3728b1000 CR3: 000000010caa4000 CR4: 0000000000750ef0
PKRU: 55555554
Call Trace:
<TASK>
? die_addr+0x36/0x90
? exc_general_protection+0x1c1/0x3f0
? asm_exc_general_protection+0x26/0x30
? __list_del_entry_valid_or_report+0x33/0xf0
__cifs_put_smb_ses+0x1ae/0x500 [cifs]
smb2_reconnect_server+0x4ed/0x710 [cifs]
process_one_work+0x205/0x6b0
worker_thread+0x191/0x360
? __pfx_worker_thread+0x10/0x10
kthread+0xe2/0x110
? __pfx_kthread+0x10/0x10
ret_from_fork+0x34/0x50
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK>
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/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，该漏洞源于内存释放后重用。
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-2024-35870 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-35870 补丁与修复 (1)
CVE-2024-35870 其他参考 (3)
同批安全公告 · Linux · 2024-05-19 · 共 82 条
| CVE-2024-35861 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35862 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35863 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35864 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35865 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35884 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35869 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35939 | 9.3 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35887 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35915 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35889 | 8.6 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35875 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35937 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35910 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35921 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35905 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35890 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35919 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35920 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35897 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 82 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-35870
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