Description
In MidnightBSD before 1.2.6 and 1.3 before August 2020, and FreeBSD before 7, a NULL pointer dereference was found in the Linux emulation layer that allows attackers to crash the running kernel. During binary interaction, td->td_emuldata in sys/compat/linux/linux_emul.h is not getting initialized and returns NULL from em_find().
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-20:02.txtVendor Advisory
- https://www.midnightbsd.org/notes/Release Notes, Vendor Advisory
- http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:02.txtVendor Advisory
- https://www.midnightbsd.org/notes/Release Notes, Vendor Advisory
Timeline
- Published
- Sep 3, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified