CVE-2024-35807— 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，该漏洞源于在调整文件系统大小期间发生损坏。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< 75cc31c2e7193b69f5d25650bda5bb42ed92f8a1 |
affected |
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< ee4e9c1976147a850f6085a13fca95bcaa00d84c |
affected | ||
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< e8e8b197317228b5089ed9e7802dadf3ccaa027a |
affected | ||
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< 239c669edb2bffa1aa2612519b1d438ab35d6be6 |
affected | ||
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< fb1088d51bbaa0faec5a55d4f5818a9ab79e24df |
affected | ||
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< 37b6a3ba793bbbae057f5b991970ebcc52cb3db5 |
affected | ||
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< b461910af8ba3bed80f48c2bf852686d05c6fc5c |
affected | ||
01f795f9e0d67adeccc61a8b20c28acb45fa5fd8< 722d2c01b8b108f8283d1b7222209d5b2a5aa7bd |
affected | ||
| … +12 条更多 | |||
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一、 漏洞 CVE-2024-35807 基础信息
漏洞信息
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Vulnerability Title
ext4: fix corruption during on-line resize
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix corruption during on-line resize
We observed a corruption during on-line resize of a file system that is
larger than 16 TiB with 4k block size. With having more then 2^32 blocks
resize_inode is turned off by default by mke2fs. The issue can be
reproduced on a smaller file system for convenience by explicitly
turning off resize_inode. An on-line resize across an 8 GiB boundary (the
size of a meta block group in this setup) then leads to a corruption:
dev=/dev/<some_dev> # should be >= 16 GiB
mkdir -p /corruption
/sbin/mke2fs -t ext4 -b 4096 -O ^resize_inode $dev $((2 * 2**21 - 2**15))
mount -t ext4 $dev /corruption
dd if=/dev/zero bs=4096 of=/corruption/test count=$((2*2**21 - 4*2**15))
sha1sum /corruption/test
# 79d2658b39dcfd77274e435b0934028adafaab11 /corruption/test
/sbin/resize2fs $dev $((2*2**21))
# drop page cache to force reload the block from disk
echo 1 > /proc/sys/vm/drop_caches
sha1sum /corruption/test
# 3c2abc63cbf1a94c9e6977e0fbd72cd832c4d5c3 /corruption/test
2^21 = 2^15*2^6 equals 8 GiB whereof 2^15 is the number of blocks per
block group and 2^6 are the number of block groups that make a meta
block group.
The last checksum might be different depending on how the file is laid
out across the physical blocks. The actual corruption occurs at physical
block 63*2^15 = 2064384 which would be the location of the backup of the
meta block group's block descriptor. During the on-line resize the file
system will be converted to meta_bg starting at s_first_meta_bg which is
2 in the example - meaning all block groups after 16 GiB. However, in
ext4_flex_group_add we might add block groups that are not part of the
first meta block group yet. In the reproducer we achieved this by
substracting the size of a whole block group from the point where the
meta block group would start. This must be considered when updating the
backup block group descriptors to follow the non-meta_bg layout. The fix
is to add a test whether the group to add is already part of the meta
block group or not.
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，该漏洞源于在调整文件系统大小期间发生损坏。
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-2024-35807 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-35807 邮件列表归档 (2)
CVE-2024-35807 其他参考 (8)
同批安全公告 · Linux · 2024-05-17 · 共 135 条
| CVE-2023-52687 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-35856 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35804 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35843 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35811 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27415 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27416 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27404 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52669 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35834 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35789 | 8.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35830 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35835 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35827 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52662 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35817 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35808 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35793 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35798 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-35814 | 7.8 HIGH | Linux kernel 安全漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2024-35807
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