CVE-2022-49343

ext4: avoid cycles in directory h-tree

Description

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.

N/A

CVSS

Severity:

EPSS 0.05%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3
https://git.kernel.org/stable/c/b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0
https://git.kernel.org/stable/c/e157c8f87e8fac112d6c955e69a60cdb9bc80a60
https://git.kernel.org/stable/c/ff4cafa51762da3824881a9000ca421d4b78b138
https://git.kernel.org/stable/c/3a3ce941645407cd0b0b7f01ad9e2ea3770f46cc
https://git.kernel.org/stable/c/d5a16a6df2c16eaf4de04948553ef0089dee463f
https://git.kernel.org/stable/c/6084240bfc44bf265ab6ae7d96980469b05be0f1
https://git.kernel.org/stable/c/3ba733f879c2a88910744647e41edeefbc0d92b2

Frequently Asked Questions

What is the severity of CVE-2022-49343?: CVE-2022-49343 has not yet been assigned a CVSS score.
How to fix CVE-2022-49343?: To fix CVE-2022-49343, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49343 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49343 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49343?: CVE-2022-49343 affects Linux Linux, Linux Linux.

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