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    CVE-2014-0196

    The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.

    Published:May 1, 2014
    Last Modified:Apr 21, 2026
    EPS:May 7, 2014
    EPSS Score:0.48556
    CVSS Score:5.5

    CISA Notification

    Description

    The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.

    Required Action:

    The impacted product is end-of-life and should be disconnected if still in use.

    Notes:

    No extra notes provided.

    Due Date
    Jun 2, 2023
    1197 days ago
    Alert Date
    May 12, 2023
    1218 days ago

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    F5
    Product
    Big-ip Access Policy Manager
    Vendor
    F5
    Product
    Big-ip Advanced Firewall Manager
    Vendor
    F5
    Product
    Big-ip Analytics
    Vendor
    F5
    Product
    Big-ip Application Acceleration Manager
    Vendor
    F5
    Product
    Big-ip Application Security Manager
    Vendor
    F5
    Product
    Big-ip Edge Gateway
    Vendor
    F5
    Product
    Big-ip Global Traffic Manager
    Vendor
    F5
    Product
    Big-ip Link Controller
    Vendor
    F5
    Product
    Big-ip Local Traffic Manager
    Vendor
    F5
    Product
    Big-ip Policy Enforcement Manager
    Vendor
    F5
    Product
    Big-ip Protocol Security Module
    Vendor
    F5
    Product
    Big-ip Wan Optimization Manager
    Vendor
    F5
    Product
    Big-ip Webaccelerator
    Vendor
    F5
    Product
    Big-iq Application Delivery Controller
    Vendor
    F5
    Product
    Big-iq Centralized Management
    Vendor
    F5
    Product
    Big-iq Cloud
    Vendor
    F5
    Product
    Big-iq Cloud And Orchestration
    Vendor
    F5
    Product
    Big-iq Device
    Vendor
    F5
    Product
    Big-iq Security
    Vendor
    F5
    Product
    Enterprise Manager
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Oracle
    Product
    Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Mission Critical
    Vendor
    Suse
    Product
    Suse Linux Enterprise Desktop
    Vendor
    Suse
    Product
    Suse Linux Enterprise High Availability Extension
    Vendor
    Suse
    Product
    Suse Linux Enterprise Server

    Exploits

    http://pastebin.com/raw.php?i=yTSFUBgZhttp://www.exploit-db.com/exploits/33516https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00http://pastebin.com/raw.php?i=yTSFUBgZhttp://www.exploit-db.com/exploits/33516https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00https://www.exploit-db.com/exploits/33516https://github.com/SunRain/CVE-2014-0196https://github.com/tempbottle/CVE-2014-0196

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    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…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://bugzilla.novell.com/show_bug.cgi?id=875690
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00
    http://linux.oracle.com/errata/ELSA-2014-0771.html
    http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.html
    http://pastebin.com/raw.php?i=yTSFUBgZ
    http://rhn.redhat.com/errata/RHSA-2014-0512.html
    http://secunia.com/advisories/59218
    http://secunia.com/advisories/59262
    http://secunia.com/advisories/59599
    http://source.android.com/security/bulletin/2016-07-01.html
    http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.html
    http://www.debian.org/security/2014/dsa-2926
    http://www.debian.org/security/2014/dsa-2928
    http://www.exploit-db.com/exploits/33516
    http://www.openwall.com/lists/oss-security/2014/05/05/6
    http://www.osvdb.org/106646
    http://www.ubuntu.com/usn/USN-2196-1
    http://www.ubuntu.com/usn/USN-2197-1
    http://www.ubuntu.com/usn/USN-2198-1
    http://www.ubuntu.com/usn/USN-2199-1
    http://www.ubuntu.com/usn/USN-2200-1
    http://www.ubuntu.com/usn/USN-2201-1
    http://www.ubuntu.com/usn/USN-2202-1
    http://www.ubuntu.com/usn/USN-2203-1
    http://www.ubuntu.com/usn/USN-2204-1
    https://bugzilla.redhat.com/show_bug.cgi?id=1094232
    https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00
    http://bugzilla.novell.com/show_bug.cgi?id=875690
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00
    http://linux.oracle.com/errata/ELSA-2014-0771.html
    http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.html
    http://pastebin.com/raw.php?i=yTSFUBgZ
    http://rhn.redhat.com/errata/RHSA-2014-0512.html
    http://secunia.com/advisories/59218
    http://secunia.com/advisories/59262
    http://secunia.com/advisories/59599
    http://source.android.com/security/bulletin/2016-07-01.html
    http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.html
    http://www.debian.org/security/2014/dsa-2926
    http://www.debian.org/security/2014/dsa-2928
    http://www.exploit-db.com/exploits/33516
    http://www.openwall.com/lists/oss-security/2014/05/05/6
    http://www.osvdb.org/106646
    http://www.ubuntu.com/usn/USN-2196-1
    http://www.ubuntu.com/usn/USN-2197-1
    http://www.ubuntu.com/usn/USN-2198-1
    http://www.ubuntu.com/usn/USN-2199-1
    http://www.ubuntu.com/usn/USN-2200-1
    http://www.ubuntu.com/usn/USN-2201-1
    http://www.ubuntu.com/usn/USN-2202-1
    http://www.ubuntu.com/usn/USN-2203-1
    http://www.ubuntu.com/usn/USN-2204-1
    https://bugzilla.redhat.com/show_bug.cgi?id=1094232
    https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-0196

    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