CVE-2022-49343 (GCVE-0-2022-49343)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2025-12-23 13:23
VLAI?
Title
ext4: avoid cycles in directory h-tree
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid cycles in directory h-tree A maliciously corrupted filesystem can contain cycles in the h-tree stored inside a directory. That can easily lead to the kernel corrupting tree nodes that were already verified under its hands while doing a node split and consequently accessing unallocated memory. Fix the problem by verifying traversed block numbers are unique.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < 24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3 (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0 (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < e157c8f87e8fac112d6c955e69a60cdb9bc80a60 (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < ff4cafa51762da3824881a9000ca421d4b78b138 (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < 3a3ce941645407cd0b0b7f01ad9e2ea3770f46cc (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < d5a16a6df2c16eaf4de04948553ef0089dee463f (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < 6084240bfc44bf265ab6ae7d96980469b05be0f1 (git)
Affected: ac27a0ec112a089f1a5102bc8dffc79c8c815571 , < 3ba733f879c2a88910744647e41edeefbc0d92b2 (git)
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    Linux Linux Affected: 2.6.19
Unaffected: 0 , < 2.6.19 (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.121 , ≤ 5.10.* (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid cycles in directory h-tree\n\nA maliciously corrupted filesystem can contain cycles in the h-tree\nstored inside a directory. That can easily lead to the kernel corrupting\ntree nodes that were already verified under its hands while doing a node\nsplit and consequently accessing unallocated memory. Fix the problem by\nverifying traversed block numbers are unique."
        }
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        "dateUpdated": "2025-12-23T13:23:48.731Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2025-02-26T02:08:31.542Z",
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}


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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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