CVE-2015-8953
fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on
02 Description
fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on
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
- 0.56% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 46.6% 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 2026-06-17.
- 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
- 2016-10-16 21:00Z10 YR AGO
- Last updated
- 2024-08-06 08:36Z2 YR AGO
- Reserved
- 2016-08-25
- Assigning CNA
- mitre
- 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
- d43e82804f65dc382cd0094436d927e199b703f7332004a1fdb04cadd6dda8ca
05 Affected products
06 References
- www.openwall.com[oss-security] 20160823 cve request: overlayfs: Fix dentry reference leakhttp://www.openwall.com/lists/oss-security/2016/08/23/9
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1367814
- www.kernel.orghttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.6
- git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efab0a0ba01a74df782eb7fa44b044dae8b5
- github.comhttps://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8b5
- www.securityfocus.com92611http://www.securityfocus.com/bid/92611
07 Fixed in
Debian 12
- linux Fixed in 4.2.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.2.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.2.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux-lts-vivid Fixed in 3.19.0-41.46~14.04.2
- linux-lts-wily Fixed in 4.2.0-19.23~14.04.1
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.