CVE-2022-49343
ext4: avoid cycles in directory h-tree
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.19
References 8
git.kernel.org
- stable/c/24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3
- stable/c/b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0
- stable/c/e157c8f87e8fac112d6c955e69a60cdb9bc80a60
- stable/c/ff4cafa51762da3824881a9000ca421d4b78b138
- stable/c/3a3ce941645407cd0b0b7f01ad9e2ea3770f46cc
- stable/c/d5a16a6df2c16eaf4de04948553ef0089dee463f
- stable/c/6084240bfc44bf265ab6ae7d96980469b05be0f1
- stable/c/3ba733f879c2a88910744647e41edeefbc0d92b2