CVE-2025-5745
Publication date 6 June 2025
Last updated 6 June 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| eglibc | 25.04 plucky | Not in release |
| 24.10 oracular | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 14.04 LTS trusty |
Needs evaluation
|
|
| glibc | 25.04 plucky |
Needs evaluation
|
| 24.10 oracular |
Needs evaluation
|
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
Notes
rodrigo-zaiden
limited to applications running on Power 10 hardware. introduced on glibc-2.40 with commit: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=23f0d81608d0ca6379894ef81670cf30af7fd081
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.6 · Medium
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |