CVE-2011-4112

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
37.2%
KEV
Not listed

Published

May 17, 2012

Last Modified

April 29, 2026

Advisory Details (4)

Auto-updated May 29, 2026
Upstream fix merged — awaiting tagged release. Sources: redhat, github_commit.
generic

oss-security - CVE-2011-4112 kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0

http://www.openwall.com/lists/oss-security/2011/11/21/4
generic
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
github_commit

commit 550fd08c2ceb (torvalds/linux)

Fix landed in torvalds/linux commit 550fd08c2ceb — awaiting tagged release

https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162
redhat

751006 – (CVE-2011-4112) CVE-2011-4112 kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0

https://bugzilla.redhat.com/show_bug.cgi?id=751006

Data Freshness Timeline

(refreshed 10× in last 7d / 44× 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.

  1. 2026-07-06 16:23 UTCEPSS rescore
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  39. 2026-05-29 04:34 UTCEG score recompute
  40. 2026-05-29 04:34 UTCGHSA enrichment
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  60. 2026-05-18 21:29 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2011-4112?
CVE-2011-4112 is a medium vulnerability published on May 17, 2012. The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFFTXSKBSHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAPNET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction…
When was CVE-2011-4112 disclosed?
CVE-2011-4112 was first published in the National Vulnerability Database on May 17, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-4112 actively exploited?
CVE-2011-4112 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-4112?
CVE-2011-4112 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2011-4112?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4112, 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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