CVE-2020-29660

NameCVE-2020-29660
DescriptionA locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2557-1, DLA-2586-1, DSA-4843-1, ELA-378-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch (security), stretch (lts), stretch4.9.320-2fixed
buster4.19.235-1fixed
buster (security)4.19.249-2fixed
bullseye5.10.106-1fixed
bullseye (security)5.10.120-1fixed
bookworm, sid5.18.5-1fixed
linux-4.19 (PTS)stretch (security), stretch (lts), stretch4.19.232-1~deb9u1fixed
linux-4.9 (PTS)jessie, jessie (lts)4.9.303-1~deb8u3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch4.9.258-1DLA-2586-1
linuxsourcebuster4.19.171-2DSA-4843-1
linuxsource(unstable)5.9.15-1
linux-4.19sourcestretch4.19.171-2~deb9u1DLA-2557-1
linux-4.9sourcejessie4.9.258-1~deb8u1ELA-378-1

Notes

https://git.kernel.org/linus/c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9
https://bugs.chromium.org/p/project-zero/issues/detail?id=2125
https://googleprojectzero.blogspot.com/2021/10/how-simple-linux-kernel-memory.html

Search for package or bug name: Reporting problems