CVE-2024-43828 (GCVE-0-2024-43828)

Vulnerability from cvelistv5 – Published: 2024-08-17 09:21 – Updated: 2025-11-03 22:05
VLAI?
Title
ext4: fix infinite loop when replaying fast_commit
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem!
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 5ed0496e383cb6de120e56991385dce70bbb87c1 (git)
Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 0619f7750f2b178a1309808832ab20d85e0ad121 (git)
Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 181e63cd595c688194e07332f9944b3a63193de2 (git)
Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < c6e67df64783e99a657ef2b8c834ba2bf54c539c (git)
Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 81f819c537d29932e4b9267f02411cbc8b355178 (git)
Affected: 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 , < 907c3fe532253a6ef4eb9c4d67efb71fab58c706 (git)
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    Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.224 , ≤ 5.10.* (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.103 , ≤ 6.1.* (semver)
Unaffected: 6.6.44 , ≤ 6.6.* (semver)
Unaffected: 6.10.3 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (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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