CVE-2012-6656

medium

Published 2014-12-05 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.0

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

Ubuntu Affected 4 releases

Version	Status	Fixed in
14.10	Affected	—
14.04	Affected	—
12.04	Affected	—
10.04	Affected	—

Debian Mixed 6 releases

Version	Status	Fixed in
trixie	Fixed	`2.17-1`
sid	Fixed	`2.17-1`
forky	Fixed	`2.17-1`
bullseye	Fixed	`2.17-1`
bookworm	Fixed	`2.17-1`
7.0	Affected	—

Application impact

Vendor	Product	Versions	Fixed
gnu	glibc	`{"endIncluding":"2.16"}`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.