CVE-2025-5745
mediumpriority · track · 0EPSS 0.003 · 17 %ileDEEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (12)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-1252GNU libc: Mehrere Schwachstellen ermöglichen Manipulation von DatenDeutsch2025-06-05csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um Daten zu manipulieren.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-5745cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-5745cnnvd
- https://sourceware.org/bugzilla/show_bug.cgi?id=33060cnnvd
- https://vigilance.fr/vulnerability/GNU-C-Library-read-write-access-via-Power10-strcmp-47503cnnvd
- https://sourceware.org/bugzilla/show_bug.cgi?id=33060enisa_euvd
- https://sourceware.org/bugzilla/show_bug.cgi?id=33060Issue Trackingnvd
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