CVE-2011-2898

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
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

net/packet/af_packet.c in the Linux kernel before 2.6.39.3 does not properly restrict user-space access to certain packet data structures associated with VLAN Tag Control Information, which allows local users to obtain potentially sensitive information via a crafted application.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

May 24, 2012

Last Modified

April 29, 2026

Advisory Details (3)

Auto-updated May 29, 2026
Patch available. Sources: github_commit, redhat.
github_commit

commit 13fcb7bd3221 (torvalds/linux)

Fix landed in torvalds/linux commit 13fcb7bd3221 — awaiting tagged release

https://github.com/torvalds/linux/commit/13fcb7bd322164c67926ffe272846d4860196dc6
redhat Patch Available

728023 – (CVE-2011-2898) CVE-2011-2898 kernel: af_packet: infoleak

Affected: Red Hat Enterprise Linux 4 and 5 as they did not backport the upstream commit 393e52e3 that introduced this flaw. This has bee

https://bugzilla.redhat.com/show_bug.cgi?id=728023
generic

oss-security - Re: CVE request: Linux kernel af_packet information leak

http://www.openwall.com/lists/oss-security/2011/08/03/7

Vendor Advisories for CVE-2011-2898(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-rt-0:2.6.33.9-rt31.79.el6rt2012-01-10redhat
redhatkernel-0:2.6.32-131.17.1.el62011-10-05redhat

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.

Affected Packages

(1 across 1 ecosystem)
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
linux-2.62.6.32-30 ... 2.6.32-39 (16 versions)2.6.32-39squeeze1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 2× in last 7d / 11× 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.

Showing the most recent 100 of 118 total refreshes for this CVE.

  1. 2026-08-19 16:58 UTCEPSS rescore
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  71. 2026-05-29 04:29 UTCVendor advisory
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2011-2898?
CVE-2011-2898 is a medium vulnerability published on May 24, 2012. net/packet/af_packet.c in the Linux kernel before 2.6.39.3 does not properly restrict user-space access to certain packet data structures associated with VLAN Tag Control Information, which allows local users to obtain potentially sensitive information via a crafted application.
When was CVE-2011-2898 disclosed?
CVE-2011-2898 was first published in the National Vulnerability Database on May 24, 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-2011-2898 actively exploited?
CVE-2011-2898 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.5% of all scored CVEs.
What is the CVSS score of CVE-2011-2898?
CVE-2011-2898 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2011-2898?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2898, 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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