CVE-2024-36001— 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，该漏洞源于以直写模式附加到文件时会出现预刷新问题。
可能的 ATT&CK 技术 1 AI
T1211 · Exploitation for Stealth
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2024-36001 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
netfs: Fix the pre-flush when appending to a file in writethrough mode
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
netfs: Fix the pre-flush when appending to a file in writethrough mode
In netfs_perform_write(), when the file is marked NETFS_ICTX_WRITETHROUGH
or O_*SYNC or RWF_*SYNC was specified, write-through caching is performed
on a buffered file. When setting up for write-through, we flush any
conflicting writes in the region and wait for the write to complete,
failing if there's a write error to return.
The issue arises if we're writing at or above the EOF position because we
skip the flush and - more importantly - the wait. This becomes a problem
if there's a partial folio at the end of the file that is being written out
and we want to make a write to it too. Both the already-running write and
the write we start both want to clear the writeback mark, but whoever is
second causes a warning looking something like:
------------[ cut here ]------------
R=00000012: folio 11 is not under writeback
WARNING: CPU: 34 PID: 654 at fs/netfs/write_collect.c:105
...
CPU: 34 PID: 654 Comm: kworker/u386:27 Tainted: G S ...
...
Workqueue: events_unbound netfs_write_collection_worker
...
RIP: 0010:netfs_writeback_lookup_folio
Fix this by making the flush-and-wait unconditional. It will do nothing if
there are no folios in the pagecache and will return quickly if there are
no folios in the region specified.
Further, move the WBC attachment above the flush call as the flush is going
to attach a WBC and detach it again if it is not present - and since we
need one anyway we might as well share it.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/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，该漏洞源于以直写模式附加到文件时会出现预刷新问题。
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-2024-36001 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2024-36001 的情报信息
请登录查看更多情报信息。
CVE-2024-36001 其他参考 (2)
同批安全公告 · Linux · 2024-05-20 · 共 62 条
| CVE-2024-35969 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35987 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35980 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35948 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36007 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35993 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35994 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35990 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-36009 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35968 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35958 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35954 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35951 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35950 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35949 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35979 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35998 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35971 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35999 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35962 | 7.1 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 62 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-36001
暂无评论