CVE-2011-5321
The tty_open function in drivers/tty/tty_io.c in the Linux kernel before 3.1.1 mishandles a driver-lookup failure, which allows local users to cause a denial of service (NULL pointer dereference and
02 Description
The tty_open function in drivers/tty/tty_io.c in the Linux kernel before 3.1.1 mishandles a driver-lookup failure, which allows local users to cause a denial of service (NULL pointer dereference and
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.37% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 30.6% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-05-02 10:00Z10 YR AGO
- Last updated
- 2024-08-07 00:30Z2 YR AGO
- Reserved
- 2015-03-13
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- 5430a179befab510f363a0a1723f61a2fcba777dd5fbc26a469122ce6dc506e9
05 Affected products
06 References
- www.openwall.com[oss-security] 20150313 Re: CVE request: Linux kernel: tty: kobject reference leakage in tty_openhttp://www.openwall.com/lists/oss-security/2015/03/13/17
- git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c290f8358acaeffd8e0c551ddcc24d1206143376
- www.kernel.orghttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.1
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1201887
- github.comhttps://github.com/torvalds/linux/commit/c290f8358acaeffd8e0c551ddcc24d1206143376
- rhn.redhat.comRHSA-2015:1221http://rhn.redhat.com/errata/RHSA-2015-1221.html
07 Fixed in
Debian 12
- linux Fixed in 3.2.20-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 3.2.20-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 3.2.20-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.