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CVE PROGRAM SOURCE RECORD3.7 Low

CVE-2026-97399

One-byte overread in strncasecmp on Power8

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

The GNU C Library glibc

Default version status: unaffected

  • 2.24 to < 2.45affected

References