CVEvulnerability
CVE-2020-24863
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-09-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-787
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.
Affected configurations
• midnightbsd midnightbsd (< 1.2.7)
• midnightbsd midnightbsd (>= 1.3 <= 2020-08-19)
• freebsd freebsd (<= 11.4)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt Exploit, Vendor Advisory
- https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c Exploit, Third Party Advisory
- https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc Patch, Vendor Advisory
- https://www.midnightbsd.org/notes/ Release Notes, Vendor Advisory
- http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt Exploit, Vendor Advisory
- https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c Exploit, Third Party Advisory
- https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc Patch, Vendor Advisory
- https://www.midnightbsd.org/notes/ Release Notes, Vendor Advisory