Bug 2150845 (CVE-2022-20153) - CVE-2022-20153 kernel: possible use-after-free due to improper locking in rcu_cblist_dequeue of rcu_segcblist.c
Summary: CVE-2022-20153 kernel: possible use-after-free due to improper locking in rcu...
Keywords:
Status: NEW
Alias: CVE-2022-20153
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2150846 2150847 2150848
Blocks: 2099268
TreeView+ depends on / blocked
 
Reported: 2022-12-05 12:06 UTC by Alex
Modified: 2024-10-12 08:28 UTC (History)
44 users (show)

Fixed In Version:
Clone Of:
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Description Alex 2022-12-05 12:06:29 UTC 
In rcu_cblist_dequeue of rcu_segcblist.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.

References:
https://github.com/torvalds/linux/commit/f70865db5ff35f5ed0c7e9ef63e7cca3d4947f04
https://bugzilla.suse.com/show_bug.cgi?id=1200609
Comment 1 Alex 2022-12-05 12:06:58 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2150846]
Comment 4 Justin M. Forbes 2022-12-08 15:31:06 UTC 
This was fixed for Fedora with the 5.13 stable kernel rebases
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