Vulnerability record · CVE-2011-2480 · published 27 November 2019

CVE-2011-2480: Freebsd information exposure vulnerability

Freebsd · Freebsd

Information Disclosure vulnerability in the 802.11 stack, as used in FreeBSD before 8.2 and NetBSD when using certain non-x86 architectures. A signedness error in the IEEE80211_IOC_CHANINFO ioctl allows a local unprivileged user to cause the kernel to copy large amounts of kernel memory back to the user, disclosing potentially sensitive information.

7.5 CVSS 3.1 High EPSS 1.6% · top 25.3% CWE-200 · Information exposure

7.5CVSS 3.1 base score, v2 5.0

1.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

2Affected product versions listed by NVD

10References

16 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Freebsd Freebsd

Netbsd Netbsd

References

Link	Tags
https://access.redhat.com/security/cve/cve-2011-2480	Broken Link
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631160	Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631161	Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-2480	Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/06/20/15	Mailing ListThird Party Advisory
https://access.redhat.com/security/cve/cve-2011-2480	Broken Link
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631160	Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631161	Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-2480	Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/06/20/15	Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-2480), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.