CVE-2024-56613— 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sched/numa子系统中vma->numab_state被覆盖导致的内存泄漏问题。
影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | ef6a22b70f6d90449a5c797b8968a682824e2011< 8f149bcc4d91ac92b32ff4949b291e6ed883dc42 |
affected |
ef6a22b70f6d90449a5c797b8968a682824e2011< a71ddd5b87cda687efa28e049e85e923689bcef9 |
affected | ||
ef6a22b70f6d90449a5c797b8968a682824e2011< 5f1b64e9a9b7ee9cfd32c6b2fab796e29bfed075 |
affected | ||
6.4 |
affected | ||
< 6.4 |
unaffected | ||
6.6.66≤ 6.6.* |
unaffected | ||
6.12.5≤ 6.12.* |
unaffected | ||
6.13≤ * |
unaffected |
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一、 漏洞 CVE-2024-56613 基础信息
漏洞信息
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Vulnerability Title
sched/numa: fix memory leak due to the overwritten vma->numab_state
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
sched/numa: fix memory leak due to the overwritten vma->numab_state
[Problem Description]
When running the hackbench program of LTP, the following memory leak is
reported by kmemleak.
# /opt/ltp/testcases/bin/hackbench 20 thread 1000
Running with 20*40 (== 800) tasks.
# dmesg | grep kmemleak
...
kmemleak: 480 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
kmemleak: 665 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff888cd8ca2c40 (size 64):
comm "hackbench", pid 17142, jiffies 4299780315
hex dump (first 32 bytes):
ac 74 49 00 01 00 00 00 4c 84 49 00 01 00 00 00 .tI.....L.I.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc bff18fd4):
[<ffffffff81419a89>] __kmalloc_cache_noprof+0x2f9/0x3f0
[<ffffffff8113f715>] task_numa_work+0x725/0xa00
[<ffffffff8110f878>] task_work_run+0x58/0x90
[<ffffffff81ddd9f8>] syscall_exit_to_user_mode+0x1c8/0x1e0
[<ffffffff81dd78d5>] do_syscall_64+0x85/0x150
[<ffffffff81e0012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
...
This issue can be consistently reproduced on three different servers:
* a 448-core server
* a 256-core server
* a 192-core server
[Root Cause]
Since multiple threads are created by the hackbench program (along with
the command argument 'thread'), a shared vma might be accessed by two or
more cores simultaneously. When two or more cores observe that
vma->numab_state is NULL at the same time, vma->numab_state will be
overwritten.
Although current code ensures that only one thread scans the VMAs in a
single 'numa_scan_period', there might be a chance for another thread
to enter in the next 'numa_scan_period' while we have not gotten till
numab_state allocation [1].
Note that the command `/opt/ltp/testcases/bin/hackbench 50 process 1000`
cannot the reproduce the issue. It is verified with 200+ test runs.
[Solution]
Use the cmpxchg atomic operation to ensure that only one thread executes
the vma->numab_state assignment.
[1] https://lore.kernel.org/lkml/1794be3c-358c-4cdc-a43d-a1f841d91ef7@amd.com/
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sched/numa子系统中vma->numab_state被覆盖导致的内存泄漏问题。
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
二、漏洞 CVE-2024-56613 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-56613 补丁与修复 (3)
同批安全公告 · Linux · 2024-12-27 · 共 221 条
| CVE-2024-56640 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-56645 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53169 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53209 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53206 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-56656 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53186 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53176 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53177 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-53179 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-56591 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56626 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53237 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53224 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56651 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56653 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56669 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56627 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-53232 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56606 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 221 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-56613
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