Detections
Analytics
CVE-2020-8428
high
Description
fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.
References
https://www.openwall.com/lists/oss-security/2020/01/28/2
https://www.debian.org/security/2020/dsa-4698
https://www.debian.org/security/2020/dsa-4667
https://usn.ubuntu.com/4325-1/
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4320-1/
https://usn.ubuntu.com/4319-1/
https://usn.ubuntu.com/4318-1/
https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
http://www.openwall.com/lists/oss-security/2020/01/28/4
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html