CVE-2026-58099
Use-after-free in kqueue copy-on-fork marker handling
A race in kqueue copy-on-fork marker handling could access freed kernel memory, potentially allowing an unprivileged local user to escalate privileges.
- Advisory
- FreeBSD-SA-26:65.kqueue
- Credit
- Reo Shiseki / Mark Johnston
- Affected
- FreeBSD 15.1
- Patched
- FreeBSD 15.1-RELEASE-p4