CVE-2014-7843
The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte
02 Description
The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte
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 31.0% 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 2026-06-17.
- 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
- 2014-11-30 01:00Z11 YR AGO
- Last updated
- 2024-08-06 13:03Z2 YR AGO
- Reserved
- 2014-10-03
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 3614aaa26cc82f509201ae9e9d30a396f076069c0a765584ff391015185d571b
05 Affected products
06 References
- www.openwall.com[oss-security] 20141113 CVE-2014-7843 Linux kernel: aarch64: copying from /dev/zero causes local DoShttp://www.openwall.com/lists/oss-security/2014/11/13/5
- github.comhttps://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d
- git.kernel.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=97fc15436b36ee3956efad83e22a557991f7d19d
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1163744
- www.securityfocus.com71082http://www.securityfocus.com/bid/71082
- www.kernel.orghttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4
- secunia.com62305http://secunia.com/advisories/62305
07 Fixed in
Debian 12
- linux Fixed in 3.16.7-ckt2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 3.16.7-ckt2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 3.16.7-ckt2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-44.73
- linux-lts-utopic Fixed in 3.16.0-29.39~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. 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.