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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 &...

Basic Information

CVE State
PUBLISHED
Reserved Date
December 03, 2013
Published Date
May 07, 2014
Last Updated
February 07, 2025
Vendor
Linux
Product
Linux Kernel
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.
Tags
linux cisa

CVSS Scores

CVSS v3.1

5.5 - MEDIUM

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

6.9

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

SSVC Information

Exploitation
active
Technical Impact
partial

Exploit Status

Exploited in the Wild
Yes (2023-05-12 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2014-05-13 12:34:51 UTC) Source

References

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

Known Exploited Vulnerability Information

Source Added Date
CISA 2023-05-12 00:00:00 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

tempbottle/CVE-2014-0196

Type: github • Created: 2014-12-17 07:39:00 UTC • Stars: 3

CVE-2014-0196: Linux kernel pty layer race condition memory corruption

SunRain/CVE-2014-0196

Type: github • Created: 2014-05-13 12:34:51 UTC • Stars: 0

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Proof of Concept Exploit Available

  • Added to KEVIntel