CVE-2026-49425 — Kernel stack disclosure in 32-bit compatibility support

CVE-2026-49425

Kernel stack disclosure in 32-bit compatibility support PUBLISHED

Description (CNA)

The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct. An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.

Affected (CNA)

Vendor / product	Versions
FreeBSD / FreeBSD	affected 15.0-RELEASE before p11; affected 14.4-RELEASE before p7; affected 14.3-RELEASE before p16

CWE

CWE-908

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:48.compat32.asc

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.