CVE-2012-6656

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-12-05 · updated 2026-06-16
Weakness: CWE-20

Description

iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8.

Affected products

Canonical Ubuntu Linux: 10.04, 12.04, 14.04, 14.10
Debian Linux: 7.0
GNU C Library (glibc): through 2.16

References

http://www.debian.org/security/2015/dsa-3142
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175
http://www.openwall.com/lists/oss-security/2014/08/29/3
http://www.openwall.com/lists/oss-security/2014/09/02/1
http://www.securityfocus.com/bid/69472
http://www.ubuntu.com/usn/USN-2432-1
https://security.gentoo.org/glsa/201503-04
https://sourceware.org/bugzilla/show_bug.cgi?id=14134
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=6e230d11837f3ae7b375ea69d7905f0d18eb79e5
http://www.debian.org/security/2015/dsa-3142
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175
http://www.openwall.com/lists/oss-security/2014/08/29/3

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