CVE-2024-26590 (GCVE-0-2024-26590)

Vulnerability from cvelistv5 – Published: 2024-02-22 16:13 – Updated: 2025-05-04 08:51
VLAI?
Title
erofs: fix inconsistent per-file compression format
Summary
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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < 47467e04816cb297905c0f09bc2d11ef865942d9 (git)
Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < 823ba1d2106019ddf195287ba53057aee33cf724 (git)
Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < eed24b816e50c6cd18cbee0ff0d7218c8fced199 (git)
Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < 118a8cf504d7dfa519562d000f423ee3ca75d2c4 (git)
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    Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.80 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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