CVE-2013-7446

MEDIUMNVD 5.35.3—

5.3

Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 6.5%
KEV: Not listed

Published

December 28, 2015

Last Modified

May 6, 2026

References (106)

Patch Availability(10)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-extra-3.19.0-49-generic (3.19.0-49.55~14.04.1) @ trusty	2026-05-22	ubuntu
ubuntu	linux-image-extra-3.13.0-77-generic (3.13.0-77.121) @ trusty	2026-05-22	ubuntu
ubuntu	linux-image-3.13.0-77-generic-lpae (3.13.0-77.121~precise1) @ precise	2026-05-22	ubuntu
ubuntu	linux-image-3.2.0-98-powerpc64-smp (3.2.0-98.138) @ precise	2026-05-22	ubuntu
ubuntu	linux-image-extra-4.2.0-27-generic (4.2.0-27.32~14.04.1) @ trusty	2026-05-22	ubuntu
ubuntu	linux-image-3.2.0-1476-omap4 (3.2.0-1476.99) @ precise	2026-05-22	ubuntu
ubuntu	linux-image-extra-3.16.0-60-generic (3.16.0-60.80~14.04.1) @ trusty	2026-05-22	ubuntu
ubuntu	linux-image-3.19.0-49-powerpc64-smp (3.19.0-49.55) @ vivid	2026-05-22	ubuntu
ubuntu	linux-image-4.2.0-1022-raspi2 (4.2.0-1022.29) @ wily	2026-05-22	ubuntu
ubuntu	linux-image-4.2.0-27-generic (4.2.0-27.32) @ wily	2026-05-22	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(10)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 01:29 UTCOSV refresh
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore

Frequently asked(5)

What is CVE-2013-7446?

CVE-2013-7446 is a medium vulnerability published on December 28, 2015. Use-after-free vulnerability in net/unix/afunix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AFUNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.

When was CVE-2013-7446 disclosed?

CVE-2013-7446 was first published in the National Vulnerability Database on December 28, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2013-7446 actively exploited?

CVE-2013-7446 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2013-7446?

CVE-2013-7446 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2013-7446?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-7446, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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