Bug 2343172 (CVE-2025-21671) - CVE-2025-21671 kernel: zram: fix potential UAF of zram table
Summary: CVE-2025-21671 kernel: zram: fix potential UAF of zram table
Keywords:
Status: NEW
Alias: CVE-2025-21671
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-01-31 12:01 UTC by OSIDB Bzimport
Modified: 2025-01-31 18:33 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2025-01-31 12:01:48 UTC
In the Linux kernel, the following vulnerability has been resolved:

zram: fix potential UAF of zram table

If zram_meta_alloc failed early, it frees allocated zram->table without
setting it NULL.  Which will potentially cause zram_meta_free to access
the table if user reset an failed and uninitialized device.


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