Description
A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txtExploit, Vendor Advisory
- https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.cExploit, Third Party Advisory
- https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.ascPatch, Vendor Advisory
- https://www.midnightbsd.org/notes/Release Notes, Vendor Advisory
- http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txtExploit, Vendor Advisory
- https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.cExploit, Third Party Advisory
- https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.ascPatch, Vendor Advisory
- https://www.midnightbsd.org/notes/Release Notes, Vendor Advisory
Timeline
- Published
- Sep 3, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified