Skip to content
CVE PROGRAM SOURCE RECORD7.8 High

CVE-2022-50300

btrfs: fix extent map use-after-free when handling missing device in read_one_chunk

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

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it's reference counted structure, in that function it's the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721

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

  • adfb69af7d8cb6a3958f75aad1ef4bc96891d116 to < b8e7ed42bc3ca0d0e4191ee394d34962d3624c22affected
  • adfb69af7d8cb6a3958f75aad1ef4bc96891d116 to < fce3713197ebba239e1c7e02174ed216ea1ee014affected
  • adfb69af7d8cb6a3958f75aad1ef4bc96891d116 to < 169a4cf46882974d4db6d85eb623ec898e51bbc0affected
  • adfb69af7d8cb6a3958f75aad1ef4bc96891d116 to < 1742e1c90c3da344f3bb9b1f1309b3f47482756aaffected

Linux Linux

Default version status: affected

  • 4.15affected
  • 0 to < 4.15unaffected
  • 5.15.87 to ≤ 5.15.*unaffected
  • 6.0.18 to ≤ 6.0.*unaffected
  • 6.1.4 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References