CVE-2015-5706 json
Use-after-free vulnerability in the path_openat function in fs/namei.c in the Linux kernel 3.x and 4.x before 4.0.4 allows local users to c…
published 2015-08-31 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-5653
- cvss
- 4.6
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
Use-after-free vulnerability in the path_openat function in fs/namei.c in the Linux kernel 3.x and 4.x before 4.0.4 allows local users to cause a denial of service or possibly have unspecified other impact via O_TMPFILE filesystem operations that leverage a duplicate cleanup operation.
Patch / fix
- linux linux_kernel 4.0.4
- linux Debian 14, Debian 13, Debian 12 4.0.4-1
debian advisories DEBIAN-CVE-2015-5706
- linux Ubuntu 14.04 LTS 3.13.0-58.97
- linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-22.22~14.04.1
- linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-43.58~14.04.1
ubuntu advisories UBUNTU-CVE-2015-5706
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2015-5706 updated cvss 7.2
kernel: Use-after-free in path lookup
-
Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +9 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmwarenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-416 Use After Free
- Technology feeds
References
-
github.com
/torvalds/linux/commit/f15133df088ecadd141ea1907f2c96df67c729f0
patch, third-party-advisory
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f15133df088ecadd141ea1907f2c96df67c729f0
patch, vendor-advisory
-
source.android.com
/security/bulletin/2017-01-01.html
patch, third-party-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1250047
issue-tracking, patch, third-party-advisory
-
ubuntu.com
/usn/USN-2680-1
vendor-advisory, third-party-advisory
-
debian.org
/security/2015/dsa-3329
vendor-advisory, third-party-advisory
-
ubuntu.com
/usn/USN-2681-1
vendor-advisory, third-party-advisory
-
kernel.org
/pub/linux/kernel/v4.x/ChangeLog-4.0.4
release-notes, vendor-advisory
-
twitter.com
/grsecurity/statuses/597127122910490624
broken-link
-
securityfocus.com
/bid/76142
vdb-entry, third-party-advisory
-
openwall.com
/lists/oss-security/2015/08/01/5
mailing-list, third-party-advisory
Sources
- CVE List CVE-2015-5706
- NVD CVE-2015-5706
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.