CVE-2021-3428

NameCVE-2021-3428
DescriptionA flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2610-1, DLA-2689-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2fixed
buster (security)4.19.260-1fixed
bullseye5.10.140-1fixed
bullseye (security)5.10.136-1fixed
bookworm, sid5.19.11-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch4.9.272-1DLA-2689-1
linuxsourcebuster4.19.181-1
linuxsource(unstable)5.8.7-1
linux-4.19sourcestretch4.19.181-1~deb9u1DLA-2610-1

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1936786
https://www.openwall.com/lists/oss-security/2021/03/17/1
https://bugzilla.suse.com/show_bug.cgi?id=1173485

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