Freebsd · Freebsd · CVE-2011-2480
**Name of the Vulnerable Software and Affected Versions**
FreeBSD versions prior to 8.2
NetBSD (affected versions not specified)
**Description**
The issue is related to an Information Disclosure vulnerability in the 802.11 stack. 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, potentially disclosing sensitive information.
**Recommendations**
For FreeBSD versions prior to 8.2, update to version 8.2 or later to resolve the issue.
For NetBSD, at the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the `IEEE80211 IOC CHANINFO` ioctl to minimize the risk of exploitation.