Skip to content
CVE PROGRAM SOURCE RECORD8.4 High

CVE-2022-50746

erofs: validate the extent length for uncompressed pclusters

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 02827e1796b33f1794966f5c3101f8da2dfa9c1d to < dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9eaffected
  • 02827e1796b33f1794966f5c3101f8da2dfa9c1d to < 40c73b2ea9611b5388807be406f30f5e4e1162daaffected
  • 02827e1796b33f1794966f5c3101f8da2dfa9c1d to < c505feba4c0d76084e56ec498ce819f02a7043aeaffected

Linux Linux

Default version status: affected

  • 4.19affected
  • 0 to < 4.19unaffected
  • 6.0.16 to ≤ 6.0.*unaffected
  • 6.1.2 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References