CVE-2012-6656
glibc: crash in IBM930 decoding
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · May 23, 2012
Updated · November 21, 2025
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.
Statement
Not vulnerable. This issue does not affect the versions of glibc in Red Hat Enterprise Linux 5, 6, or 7.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer