CVE-2025-5745
Medium
Description
The strncmp implementation optimized for the Power10 processor in the GNU C Library version 2.40 and later writes to vector registers v20 to v31 without saving contents from the caller (those registers are defined as non-volatile registers by the powerpc64le ABI), resulting in overwriting of its contents and potentially altering control flow of the caller, or leaking the input strings to the function to other parts of the program.
SeverityMedium
CVSS5.6
Exploit probability—
Product
Gnu Glibc
PublishedJun 5, 2025
First seenJun 5, 2025
Weakness typeCWE-665CWE-665
How to fix
Update
- gnu glibc2.40-136, 2.41-57 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu glibc | 2.40 ≤ v < 2.40-136, 2.41 ≤ v < 2.41-57 | 2.40-136, 2.41-57 |
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