CVE-2020-25212

NameCVE-2020-25212
DescriptionA TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.
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-2385-1, DLA-2420-1, ELA-307-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch4.9.228-1vulnerable
stretch (security)4.9.290-1fixed
buster4.19.208-1fixed
buster (security)4.19.194-3fixed
bullseye5.10.84-1fixed
bullseye (security)5.10.46-5fixed
sid, bookworm5.15.5-2fixed
linux-4.19 (PTS)stretch (security)4.19.208-1~deb9u1fixed
linux-4.9 (PTS)jessie, jessie (lts)4.9.290-1~deb8u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch4.9.240-1DLA-2420-1
linuxsourcebuster4.19.146-1
linuxsource(unstable)5.7.17-1
linux-4.19sourcestretch4.19.146-1~deb9u1DLA-2385-1
linux-4.9sourcejessie4.9.240-2~deb8u1ELA-307-1

Notes

https://git.kernel.org/linus/b4487b93545214a9db8cbf32e86411677b0cca21

Search for package or bug name: Reporting problems