What is CVE-2013-4312?

CVE-2013-4312 is a medium-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.2/10. Published 2016-02-08.

How severe is CVE-2013-4312?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Is CVE-2013-4312 known to be exploited?

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

Buffer overflow in Linux Kernel

CVE-2013-4312

The Linux kernel before 4.4.1 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by sending each descriptor over a UNIX socket before closing it, related to net/unix/af_unix.c and net/unix/garbage.c.

Vulnerability class: Buffer Overflow

Published 2016-02-08 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Linux Kernel
Oracle Linux — versions 5.0, 6, 7

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

rhn.redhat.com/errata/RHSA-2016-0855.html (vendor-advisory)
github.com/torvalds/linux/commit/712f4aad406bb1ed67f3f98d04c044191f0ff593 (Vendor Advisory)
www.ubuntu.com/usn/USN-2967-1 (vendor-advisory)
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1 (Vendor Advisory)
www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
www.debian.org/security/2016/dsa-3503 (vendor-advisory)
www.ubuntu.com/usn/USN-2967-2 (vendor-advisory)
rhn.redhat.com/errata/RHSA-2016-2584.html (vendor-advisory)
rhn.redhat.com/errata/RHSA-2016-2574.html (vendor-advisory)

Frequently asked questions

What is CVE-2013-4312?: CVE-2013-4312 is a medium-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.2/10. Published 2016-02-08.
How severe is CVE-2013-4312?: Medium severity. CVSS v3 base score is 6.2 out of 10.
Is CVE-2013-4312 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.