Vulnerability Details CVE-2026-49424
The Linux waitid() implementation translates a FreeBSD siginfo_t struct into a stack-declared Linux siginfo_t. It did not first zero the stack struct.
An unprivileged user may observe 104 bytes of uninitialized kernel stack data, which may contain sensitive information.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.6%
CVSS Severity
CVSS v3 Score 5.5