CVE-2025-39777
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-11

Last updated on: 2025-11-25

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-09-11
Last Modified
2025-11-25
Generated
2026-05-07
AI Q&A
2025-09-11
EPSS Evaluated
2026-05-05
NVD
CVE-2025-39777
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-NVD-CWE-noinfo
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is related to the Linux kernel's crypto subsystem, specifically the acomp component. It involves a control flow integrity (CFI) failure caused by type punning, which is a programming issue where a piece of memory is accessed as if it were a different type than it actually is. The fix ensures that the workspace free function uses a consistent type and is called through a function pointer of that same type to avoid crashes when CFI is enabled.


How can this vulnerability impact me? :

If exploited or triggered, this vulnerability could cause the Linux kernel to crash when control flow integrity is enabled, potentially leading to denial of service or system instability.


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