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    CVE-2014-6040

    GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via a multibyte character value of "0xffff" to the iconv function when converting (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, or (5) IBM1364 encoded data to UTF-8.

    Published:Aug 28, 2014
    Last Modified:Apr 12, 2025
    EPS:Dec 5, 2014
    EPSS Score:0.07802
    CVSS Score:5

    Affected Products

    Vendor
    Gnu
    Product
    Glibc
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://www.openwall.com/lists/oss-security/2014/09/02/1https://sourceware.org/bugzilla/show_bug.cgi?id=17325http://www.openwall.com/lists/oss-security/2014/09/02/1https://sourceware.org/bugzilla/show_bug.cgi?id=17325

    Related CVEs

    CVE-2026-80489 (CVSS 5.9) — A flaw was found in glibc. This vulnerability allows a remote attacker to cause a denial of service (DoS) by p…
    CVE-2026-77117 (CVSS 5.9) — A flaw was found in glibc. A remote attacker could exploit this vulnerability by providing specially crafted i…
    CVE-2026-19499 (CVSS 6.8) — A flaw was found in glibc. The strfmon and strfmon_l functions are vulnerable to a buffer overflow when proces…
    CVE-2026-19542 (CVSS 4.2) — A flaw was found in glibc. An out-of-bounds array write vulnerability exists within the `tdelete` function. Th…
    CVE-2026-6368 (CVSS 2.1) — Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to r…
    CVE-2026-6238 (CVSS 6.5) — The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.0.1 to version 2…
    CVE-2026-5435 (CVSS 7.3) — The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail…
    CVE-2026-5450 (CVSS 9.8) — Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 t…
    CVE-2026-5928 (CVSS 7.5) — Calling the ungetwc function on a FILE stream with wide characters encoded in a character set that has overlap…
    CVE-2026-4046 (CVSS 7.5) — The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when…

    References

    http://linux.oracle.com/errata/ELSA-2015-0016.html
    http://secunia.com/advisories/62100
    http://secunia.com/advisories/62146
    http://ubuntu.com/usn/usn-2432-1
    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
    https://security.gentoo.org/glsa/201602-02
    https://sourceware.org/bugzilla/show_bug.cgi?id=17325
    https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=41488498b6
    http://linux.oracle.com/errata/ELSA-2015-0016.html
    http://secunia.com/advisories/62100
    http://secunia.com/advisories/62146
    http://ubuntu.com/usn/usn-2432-1
    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
    https://security.gentoo.org/glsa/201602-02
    https://sourceware.org/bugzilla/show_bug.cgi?id=17325
    https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=41488498b6

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High