CVE-2024-26869: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to truncate meta inode pages forcely Below race case can cause data corruption: Thread A GC thread - gc_data_segment - ra_data_block - locked meta_inode page - f2fs_inplace_write_data - invalidate_mapping_pages : fail to invalidate meta_inode page due to lock failure or dirty|writeback status - f2fs_submit_page_bio : write last dirty data to old blkaddr - move_data_block - load old data from meta_inode page - f2fs_submit_page_write : write old data to new blkaddr Because invalidate_mapping_pages() will skip invalidating page which has unclear status including locked, dirty, writeback and so on, so we need to use truncate_inode_pages_range() instead of invalidate_mapping_pages() to make sure meta_inode page will be dropped.

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CVSS v3.1 Score

4.7

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.19 — 6.6.23
linux	linux_kernel	6.7 — 6.7.11
linux	linux_kernel	6.8 — 6.8.2

References

Advisories & Patches

https://git.kernel.org/stable/c/04226d8e3c4028dc451e9d8777356ec0f7919253 https://git.kernel.org/stable/c/77bfdb89cc222fc7bfe198eda77bdc427d5ac189 https://git.kernel.org/stable/c/9f0c4a46be1fe9b97dbe66d49204c1371e3ece65 https://git.kernel.org/stable/c/c92f2927df860a60ba815d3ee610a944b92a8694 https://git.kernel.org/stable/c/04226d8e3c4028dc451e9d8777356ec0f7919253 https://git.kernel.org/stable/c/77bfdb89cc222fc7bfe198eda77bdc427d5ac189 https://git.kernel.org/stable/c/9f0c4a46be1fe9b97dbe66d49204c1371e3ece65 https://git.kernel.org/stable/c/c92f2927df860a60ba815d3ee610a944b92a8694

Frequently Asked Questions

What is CVE-2024-26869? +

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to truncate meta inode pages forcely Below race case can cause data corruption: Thread A GC thread - gc_data_segment - ra_data_block - locked meta_inode page - f2fs_inplace_write_data - invalidate_mapping_pages : fail to invalidate meta_inode page due to lock failure or dirty|writeback status - f2fs_submit_page_bio : write last dirty data to old blkaddr - move_data_block - load old data from meta_inode page - f2fs_submit_page_write : write old data to new blkaddr Because invalidate_mapping_pages() will skip invalidating page which has unclear status including locked, dirty, writeback and so on, so we need to use truncate_inode_pages_range() instead of invalidate_mapping_pages() to make sure meta_inode page will be dropped. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2024-26869? +

CVE-2024-26869 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-26869? +

CVE-2024-26869 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-26869? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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