Bug 2396395 (CVE-2022-50391) - CVE-2022-50391 kernel: mm/mempolicy: fix memory leak in set_mempolicy_home_node system call
Summary: CVE-2022-50391 kernel: mm/mempolicy: fix memory leak in set_mempolicy_home_no...
Keywords:
Status: NEW
Alias: CVE-2022-50391
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: 2025-09-18 14:02 UTC by OSIDB Bzimport
Modified: 2025-09-18 15:37 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-09-18 14:02:36 UTC 
In the Linux kernel, the following vulnerability has been resolved:

mm/mempolicy: fix memory leak in set_mempolicy_home_node system call

When encountering any vma in the range with policy other than MPOL_BIND or
MPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on
the policy just allocated with mpol_dup().

This allows arbitrary users to leak kernel memory.
Comment 1 Keith Grant 2025-09-18 15:34:53 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091853-CVE-2022-50391-7caa@gregkh/T
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