CVE-2025-5702: The strcmp implementation optimized for the Power10 processor in the GNU C Library version 2.39 and later writes to vector registers v20 to v31 without saving…

medium5.6CVSS 3.1

AVNACHPRNUINSUCLILAL

The strcmp implementation optimized for the Power10 processor in the GNU C Library version 2.39 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.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
debian	glibc	< glibc 2.41-9 (forky)	glibc 2.41-9 (forky)
gnu	glibc	>= 0 < 2.41-9	2.41-9
gnu	glibc	>= 0 < 2.41-9	2.41-9
gnu	glibc	>= 0 < 2.39-0ubuntu8.5	2.39-0ubuntu8.5
gnu	glibc	>= 2.39 < 2.39-209	2.39-209
gnu	glibc	>= 2.40 < 2.40-139	2.40-139
gnu	glibc	>= 2.41 < 2.41-60	2.41-60
msrc	azl3_mozjs_102.15.1-1_on_azure_linux_3.0	—	—
the_gnu_c_library	glibc	—	—

CVSS provenance

nvdv3.15.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

osv5.6MEDIUM