Bug 2426213 (CVE-2022-50843) - CVE-2022-50843 kernel: dm clone: Fix UAF in clone_dtr()
Summary: CVE-2022-50843 kernel: dm clone: Fix UAF in clone_dtr()
Keywords:
Status: NEW
Alias: CVE-2022-50843
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:16 UTC by OSIDB Bzimport
Modified: 2025-12-31 01:03 UTC (History)
0 users

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Description OSIDB Bzimport 2025-12-30 13:16:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

dm clone: Fix UAF in clone_dtr()

Dm_clone also has the same UAF problem when dm_resume()
and dm_destroy() are concurrent.

Therefore, cancelling timer again in clone_dtr().
Comment 1 Alexander B 2025-12-31 00:59:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123020-CVE-2022-50843-ae87@gregkh/T
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