CVE-2021-31871

NameCVE-2021-31871
DescriptionAn issue was discovered in klibc before 2.0.9. An integer overflow in the cpio command may result in a NULL pointer dereference on 64-bit systems.
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)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
klibc (PTS)stretch2.0.4-9vulnerable
buster2.0.6-1vulnerable
bullseye, sid2.0.8-6fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
klibcsource(unstable)2.0.8-6

Notes

[buster] - klibc <no-dsa> (Minor issue; only used in initramfs and not dealing with untrusted data)
[stretch] - klibc <no-dsa> (Minor issue; only used in initramfs and not dealing with untrusted data)
https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5
https://www.openwall.com/lists/oss-security/2021/04/30/1

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