What is CVE-2015-5706?

CVE-2015-5706 is a vulnerability in Linux Kernel, classified under Use After Free. Published 2015-08-31.

Is CVE-2015-5706 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux Kernel

CVE-2015-5706

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.

Vulnerability class: Use-After-Free

Published 2015-08-31 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 4.6 (Medium). Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.004 (35.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 12.04, 14.04
Debian Linux — versions 7.0, 8.0

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

thdusdl1219/CVE-Study

References

source.android.com/security/bulletin/2017-01-01.html (Patch, Third Party Advisory)
twitter.com/grsecurity/statuses/597127122910490624 (Broken Link)
www.ubuntu.com/usn/USN-2680-1 (vendor-advisory, Third Party Advisory)
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.4 (Release Notes, Vendor Advisory)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
www.securityfocus.com/bid/76142 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2015/dsa-3329 (vendor-advisory, Third Party Advisory)
github.com/torvalds/linux/commit/f15133df088ecadd141ea1907f2c96df67c729f0 (Patch, Third Party Advisory)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
www.ubuntu.com/usn/USN-2681-1 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2015-5706?: CVE-2015-5706 is a vulnerability in Linux Kernel, classified under Use After Free. Published 2015-08-31.
Is CVE-2015-5706 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.