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
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.210-1+deb9u1vulnerable
buster4.19.146-1fixed
buster (security)4.19.118-2+deb10u1vulnerable
bullseye, sid5.8.10-1fixed
linux-4.19 (PTS)stretch (security)4.19.146-1~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster4.19.146-1
linuxsource(unstable)5.7.17-1
linux-4.19sourcestretch4.19.146-1~deb9u1DLA-2385-1

Notes

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

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