CVE-2011-2480

Name: CVE-2011-2480
Creator: NVD / NIST
Published: 2019-11-27T19:15:11.603+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.59%

Last modified Jun 16, 2026

CVE-2011-2480 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.59% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.59%

72.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	< 8.2
Netbsd	Netbsd	All versions

References

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

Timeline

Published: Nov 27, 2019
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2480?

How severe is CVE-2011-2480?

CVE-2011-2480 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2480?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2480?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST