Bug 2425007 (CVE-2025-68737) - CVE-2025-68737 kernel: arm64/pageattr: Propagate return value from __change_memory_common
Summary: CVE-2025-68737 kernel: arm64/pageattr: Propagate return value from __change_m...
Keywords:
Status: NEW
Alias: CVE-2025-68737
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-24 13:01 UTC by OSIDB Bzimport
Modified: 2026-06-29 18:56 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2025-12-24 13:01:29 UTC
In the Linux kernel, the following vulnerability has been resolved:

arm64/pageattr: Propagate return value from __change_memory_common

The rodata=on security measure requires that any code path which does
vmalloc -> set_memory_ro/set_memory_rox must protect the linear map alias
too. Therefore, if such a call fails, we must abort set_memory_* and caller
must take appropriate action; currently we are suppressing the error, and
there is a real chance of such an error arising post commit a166563e7ec3
("arm64: mm: support large block mapping when rodata=full"). Therefore,
propagate any error to the caller.


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