Vulnerability in GNU Glibc
CVE-2025-5745
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.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (15.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- GNU Glibc
- The GNU C Library Glibc — versions 2.40
Weakness classification (CWE)
References
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (Issue Tracking)
Frequently asked questions
- What is CVE-2025-5745?
- CVE-2025-5745 is a medium-severity vulnerability in GNU Glibc, classified under Improper Initialization. CVSS score: 5.6/10. Published 2025-06-05.
- How severe is CVE-2025-5745?
- Medium severity. CVSS v3 base score is 5.6 out of 10.