CVE-2022-49343
ext4: avoid cycles in directory h-tree
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 26, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
ac27a0ec112a089f1a5102bc8dffc79c8c815571 < 24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3 ac27a0ec112a089f1a5102bc8dffc79c8c815571 < b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0 ac27a0ec112a089f1a5102bc8dffc79c8c815571 < e157c8f87e8fac112d6c955e69a60cdb9bc80a60 ac27a0ec112a089f1a5102bc8dffc79c8c815571 < ff4cafa51762da3824881a9000ca421d4b78b138 ac27a0ec112a089f1a5102bc8dffc79c8c815571 < 3a3ce941645407cd0b0b7f01ad9e2ea3770f46cc ac27a0ec112a089f1a5102bc8dffc79c8c815571 < d5a16a6df2c16eaf4de04948553ef0089dee463f ac27a0ec112a089f1a5102bc8dffc79c8c815571 < 6084240bfc44bf265ab6ae7d96980469b05be0f1 ac27a0ec112a089f1a5102bc8dffc79c8c815571 < 3ba733f879c2a88910744647e41edeefbc0d92b2
Linux / Linux
2.6.19
References
git.kernel.org: https://git.kernel.org/stable/c/24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3 git.kernel.org: https://git.kernel.org/stable/c/b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0 git.kernel.org: https://git.kernel.org/stable/c/e157c8f87e8fac112d6c955e69a60cdb9bc80a60 git.kernel.org: https://git.kernel.org/stable/c/ff4cafa51762da3824881a9000ca421d4b78b138 git.kernel.org: https://git.kernel.org/stable/c/3a3ce941645407cd0b0b7f01ad9e2ea3770f46cc git.kernel.org: https://git.kernel.org/stable/c/d5a16a6df2c16eaf4de04948553ef0089dee463f git.kernel.org: https://git.kernel.org/stable/c/6084240bfc44bf265ab6ae7d96980469b05be0f1 git.kernel.org: https://git.kernel.org/stable/c/3ba733f879c2a88910744647e41edeefbc0d92b2