CVE-2014-2039

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-02-28 · updated 2026-06-17
Weakness: CWE-20

Description

arch/s390/kernel/head64.S in the Linux kernel before 3.13.5 on the s390 platform does not properly handle attempted use of the linkage stack, which allows local users to cause a denial of service (system crash) by executing a crafted instruction.

Affected products

Linux kernel: before 3.13.5 — fixed in 3.13.5

How to fix

Upgrade to a fixed version: Linux kernel 3.13.5. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8d7f6690cedb83456edd41c9bd583783f0703bf0
http://linux.oracle.com/errata/ELSA-2014-0771.html
http://secunia.com/advisories/59262
http://secunia.com/advisories/59309
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.5
http://www.openwall.com/lists/oss-security/2014/02/20/14
http://www.securityfocus.com/bid/65700
https://bugzilla.redhat.com/show_bug.cgi?id=1067558
https://github.com/torvalds/linux/commit/8d7f6690cedb83456edd41c9bd583783f0703bf0
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8d7f6690cedb83456edd41c9bd583783f0703bf0
http://linux.oracle.com/errata/ELSA-2014-0771.html
http://secunia.com/advisories/59262

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