CVE-2022-50746

In the Linux kernel, the following vulnerability has been resolved: erofs: validate the extent length for uncompressed pclusters syzkaller reported a KASAN use-after-free: https://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2 The referenced fuzzed image actually has two issues: - m_pa == 0 as a non-inlined pcluster; - The logical length is longer than its physical length. The first issue has already been addressed. This patch addresses the second issue by checking the extent length validity.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/40c73b2ea9611b5388807be406f30f5e4e1162da
https://git.kernel.org/stable/c/c505feba4c0d76084e56ec498ce819f02a7043ae
https://git.kernel.org/stable/c/dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-24 13:16

Updated : 2026-08-04 10:18

NVD link : CVE-2022-50746

Mitre link : CVE-2022-50746

CVE.ORG link : CVE-2022-50746

JSON object : View

Products Affected

No product.

CWE

No CWE.

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