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    CVE-2014-8121

    DB_LOOKUP in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) 2.21 and earlier does not properly check if a file is open, which allows remote attackers to cause a denial of service (infinite loop) by performing a look-up on a database while iterating over it, which triggers the file pointer to be reset.

    Published:Feb 23, 2015
    Last Modified:Apr 12, 2025
    EPS:Mar 27, 2015
    EPSS Score:0.02531
    CVSS Score:5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Gnu
    Product
    Glibc
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Suse
    Product
    Suse Linux Enterprise Desktop
    Vendor
    Suse
    Product
    Suse Linux Enterprise Server

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=1165192https://sourceware.org/ml/libc-alpha/2015-02/msg00617.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1165192https://sourceware.org/ml/libc-alpha/2015-02/msg00617.html

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
    http://rhn.redhat.com/errata/RHSA-2015-0327.html
    http://www.debian.org/security/2016/dsa-3480
    http://www.securityfocus.com/bid/73038
    http://www.ubuntu.com/usn/USN-2985-1
    http://www.ubuntu.com/usn/USN-2985-2
    https://bugzilla.redhat.com/show_bug.cgi?id=1165192
    https://security.gentoo.org/glsa/201602-02
    https://sourceware.org/ml/libc-alpha/2015-02/msg00617.html
    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.html
    http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
    http://rhn.redhat.com/errata/RHSA-2015-0327.html
    http://www.debian.org/security/2016/dsa-3480
    http://www.securityfocus.com/bid/73038
    http://www.ubuntu.com/usn/USN-2985-1
    http://www.ubuntu.com/usn/USN-2985-2
    https://bugzilla.redhat.com/show_bug.cgi?id=1165192
    https://security.gentoo.org/glsa/201602-02
    https://sourceware.org/ml/libc-alpha/2015-02/msg00617.html

    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