Bug 2394625 (CVE-2025-39777) - CVE-2025-39777 kernel: crypto: acomp - Fix CFI failure due to type punning
Summary: CVE-2025-39777 kernel: crypto: acomp - Fix CFI failure due to type punning
Keywords:
Status: NEW
Alias: CVE-2025-39777
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: 2025-09-11 17:03 UTC by OSIDB Bzimport
Modified: 2025-09-11 19:24 UTC (History)
0 users

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Description OSIDB Bzimport 2025-09-11 17:03:13 UTC 
In the Linux kernel, the following vulnerability has been resolved:

crypto: acomp - Fix CFI failure due to type punning

To avoid a crash when control flow integrity is enabled, make the
workspace ("stream") free function use a consistent type, and call it
through a function pointer that has that same type.
Comment 1 Jon Moroney 2025-09-11 19:22:33 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091148-CVE-2025-39777-49b7@gregkh/T
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