Threats Tagged 'cve-2026-6791'

Multiple security issues were fixed in the glibc-2.44-1.1 package for openSUSE Tumbleweed. These issues relate to vulnerabilities identified by CWE-1341 and CWE-120. The update addresses these flaws to improve security. The vendor advisory from Red Hat indicates that updates are available for related packages, including glibc and its language packs. No known exploits are reported in the wild. The severity is assessed as medium.

When expanding paths that begin with a tilde (~) followed by a username, the internal parse_tilde function extracts the username to determine the user's home directory. The implementation allocates memory for this username directly on the stack using the strndupa macro. Because the size of this allocation was determined by the length of the user-supplied input without any bounds checks, passing an excessively long username e.g. thousands of characters, forces the thread to exhaust its stack space. Thus if an application passes untrusted, attacker-controlled input to the wordexp function, an attacker can trigger a stack clash.