CVE-2012-6547
The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack
02 Description
The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack
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
- 0.39% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 33.9% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Low. 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
- 2013-03-14 20:00Z13 YR AGO
- Last updated
- 2024-08-06 21:36Z2 YR AGO
- Reserved
- 2013-03-14
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- 93062dcbf76f1e2dd5b62cfd2f562cc5bdbc5dd4b915730539560e7115f805ba
05 Affected products
06 References
- www.mandriva.comMDVSA-2013:176http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
- www.openwall.com[oss-security] 20130305 CVE Requests (maybe): Linux kernel: various info leaks, some NULL ptr derefshttp://www.openwall.com/lists/oss-security/2013/03/05/13
- github.comhttps://github.com/torvalds/linux/commit/a117dacde0288f3ec60b6e5bcedae8fa37ee0dfc
- www.kernel.orghttps://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
- rhn.redhat.comRHSA-2013:0744http://rhn.redhat.com/errata/RHSA-2013-0744.html
- git.kernel.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a117dacde0288f3ec60b6e5bcedae8fa37ee0dfc
07 Fixed in
Debian 12
- linux Fixed in 3.2.29-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 3.2.29-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 3.2.29-1
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.