Description (CNA)
Calling strfmon and strfmon_l in the GNU C Library version 2.38 to 2.44 can write past the end of the caller-supplied output buffer when a conversion uses right-justified width padding. Exploitation requires an application code path that calls strfmon or strfmon_l with right-justified width padding into a destination buffer that is large enough for the padding to succeed but too small for the internal memmove call. The field width or format may be attacker-influenced or a fixed susceptible pattern in the caller. At the time of publication, no network-facing application impact is known.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| The GNU C Library / glibc | affected 2.38 through 2.44 |
CWE
CWE-122
References
- https://sourceware.org/bugzilla/show_bug.cgi?id=34510
- https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0017
ADP enrichment
No English description supplied.
No references supplied.