CVE-2011-0709

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

The br_mdb_ip_get function in net/bridge/br_multicast.c in the Linux kernel before 2.6.35-rc5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an IGMP packet, related to lack of a multicast table.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
89.5%
KEV
Not listed

Published

February 18, 2011

Last Modified

April 29, 2026

Advisory Details (6)

Auto-updated May 29, 2026
No patch confirmed yet.
generic

oss-security - CVE request - kernel: bridge br_multicast NULL pointer dereference

http://openwall.com/lists/oss-security/2011/02/16/1
generic

Re: bridge br_multicast: BUG: unable to handle kernel NULL pointer dereference — Netdev

http://www.spinics.net/lists/netdev/msg134444.html
generic

bridge br_multicast: BUG: unable to handle kernel NULL pointer dereference — Netdev

http://www.spinics.net/lists/netdev/msg134414.html
generic
http://www.securityfocus.com/bid/41432
generic

oss-security - Re: CVE request - kernel: bridge br_multicast NULL pointer dereference

http://openwall.com/lists/oss-security/2011/02/16/8
generic

oss-security - Re: CVE request - kernel: bridge br_multicast NULL pointer dereference

http://openwall.com/lists/oss-security/2011/02/16/14

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.35-25-generic (2.6.35-25.44~lucid1) @ lucid2026-05-29ubuntu

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.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

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 9× in last 7d / 39× 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. 2026-07-22 21:46 UTCEG score recompute
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  51. 2026-05-29 08:46 UTCEG score recompute
  52. 2026-05-29 08:46 UTCVendor advisory
  53. 2026-05-29 08:46 UTCGHSA enrichment
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Frequently asked(5)

What is CVE-2011-0709?
CVE-2011-0709 is a high vulnerability published on February 18, 2011. The brmdbipget function in net/bridge/brmulticast.c in the Linux kernel before 2.6.35-rc5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an IGMP packet, related to lack of a multicast table.
When was CVE-2011-0709 disclosed?
CVE-2011-0709 was first published in the National Vulnerability Database on February 18, 2011, 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-2011-0709 actively exploited?
CVE-2011-0709 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-0709?
CVE-2011-0709 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2011-0709?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-0709, 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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