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
2026-06-16
AI Q&A
2025-09-11
EPSS Evaluated
2026-06-15
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
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CWE ID Description
CWE-NVD-CWE-noinfo
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Executive Summary

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.

Impact Analysis

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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