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,…
Not rated yet
Known exploited
- Severity
- Not rated yet
- No source has published a CVSS score yet
- Exploit chance (EPSS)
- 20.33%
- Chance of exploitation in the next 30 days. Higher than 97.48% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since May 12, 2023
- Weakness
- —
- Not classified
- Fix
- None yet
- No fixed version published
Exploited in the wild. Linux Kernel Race Condition Vulnerability (Linux Kernel). Required action: The impacted product is end-of-life and should be disconnected if still in use. Due for U.S. federal agencies by Jun 2, 2023.
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.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
References
Advisories
- bugzilla.novell.com/show_bug.cgi
- linux.oracle.com/errata/ELSA-2014-0771.html
- lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.html
- lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.html
- pastebin.com/raw.php
- rhn.redhat.com/errata/RHSA-2014-0512.html
- secunia.com/advisories/59218
- secunia.com/advisories/59262
- secunia.com/advisories/59599
- support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.html
- debian.org/security/2014/dsa-2926
- debian.org/security/2014/dsa-2928
- exploit-db.com/exploits/33516
- openwall.com/lists/oss-security/2014/05/05/6
- ubuntu.com/usn/USN-2196-1
- ubuntu.com/usn/USN-2197-1
- ubuntu.com/usn/USN-2198-1
- ubuntu.com/usn/USN-2199-1
- ubuntu.com/usn/USN-2200-1
- ubuntu.com/usn/USN-2201-1
- ubuntu.com/usn/USN-2202-1
- ubuntu.com/usn/USN-2203-1
- ubuntu.com/usn/USN-2204-1
- bugzilla.redhat.com/show_bug.cgi
- github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00
Other links
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
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