CVE-2016-2053

NameCVE-2016-2053
DescriptionThe asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel before 4.3 allows attackers to cause a denial of service (panic) via an ASN.1 BER file that lacks a public key, leading to mishandling by the public_key_verify_signature function in crypto/asymmetric_keys/public_key.c.
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 severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1fixed
wheezy (security)3.2.96-3fixed
jessie3.16.51-2fixed
jessie (security)3.16.51-3+deb8u1fixed
stretch (security), stretch4.9.82-1+deb9u3fixed
buster4.15.11-1fixed
sid4.15.17-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.3.1-1high
linuxsourcejessie3.16.7-ckt25-2high
linuxsourcewheezy(not affected)
linux-2.6source(unstable)(not affected)

Notes

[wheezy] - linux <not-affected> (Vulnerable code not present)
- linux-2.6 <not-affected> (Vulnerable code not present)
https://bugzilla.redhat.com/show_bug.cgi?id=1300237
Introduced in https://git.kernel.org/linus/3d167d68e3805ee45ed2e8412fc03ed919c54c24 (v3.13-rc1)
Fixed by: https://git.kernel.org/linus/0d62e9dd6da45bbf0f33a8617afc5fe774c8f45f (v4.3-rc1)

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