CVE-2014-0196

MEDIUM

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.

References

http://bugzilla.novell.com/show_bug.cgi?id=875690

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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

Details

Source: MITRE

Published: 2014-05-07

Updated: 2017-01-07

Type: CWE-362

Risk Information

CVSS v2.0

Base Score: 6.9

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

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM