CVE-2026-97399
One-byte overread in strncasecmp on Power8
- State
- Published
- Severity
- 3.7 Low
- Published
- Sep 28, 2026
- Updated
- Sep 28, 2026
- Reserved
- Sep 24, 2026
Description
The strncasecmp function in the GNU C Library 2.24 and later optimized for the Power8 architecture may read one byte beyond the input size limit, which may crash a program when that byte is not readable.
This condition may happen when the input strings to the strncasecmp function are attacker controlled in an application and they match all the way up to the edge of their page and the neighbouring page is either not mapped or is not readable.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | glibc |
Weaknesses
- CWE-126 Buffer over-read
Affected Products
| Product | Versions |
|---|---|
glibcThe GNU C Library |
|
References
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