CVE-2025-39702
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-05

Last updated on: 2026-03-17

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.
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Meta Information
Published
2025-09-05
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2025-09-05
EPSS Evaluated
2026-06-15
NVD
CVE-2025-39702
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux 6.1
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel involves the comparison of MACs (Message Authentication Codes) in a way that is not constant-time, which can allow timing attacks. The fix ensures that MAC comparisons are done in constant time using the appropriate helper function to prevent attackers from exploiting timing differences to gain information.

Impact Analysis

If exploited, this vulnerability could allow an attacker to perform timing attacks to potentially reveal sensitive information from MAC comparisons, which could compromise the integrity and security of communications or data protected by these MACs.

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