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Debian: CVE-2024-26590: linux -- security update

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Debian: CVE-2024-26590: linux -- security update

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
02/22/2024
Created
07/31/2024
Added
07/30/2024
Modified
01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: fix inconsistent per-file compression format EROFS can select compression algorithms on a per-file basis, and each per-file compression algorithm needs to be marked in the on-disk superblock for initialization. However, syzkaller can generate inconsistent crafted images that use an unsupported algorithmtype for specific inodes, e.g. use MicroLZMA algorithmtype even it's not set in `sbi->available_compr_algs`.This can lead to an unexpected "BUG: kernel NULL pointer dereference" if the corresponding decompressor isn't built-in. Fix this by checking against `sbi->available_compr_algs` for each m_algorithmformat request.Incorrect !erofs_sb_has_compr_cfgs preset bitmap is now fixed together since it was harmless previously.

Solution(s)

  • debian-upgrade-linux

References

  • https://attackerkb.com/topics/cve-2024-26590
  • CVE - 2024-26590
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  • 已创建
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