wifi: mac80211: disconnect on CSA to channel 0
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.110, 6.18.52, 7.2.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: disconnect on CSA to channel 0 The refactor for the CSA parsing erroneously equates channel zero and no information present, leading it to ignore a CSA on an AP that advertises a switch to that (invalid) channel. This leads to not disconnecting, which we should. For Intel devices, this can lead to a firmware crash. Fix this by using an int type for the channel number as well as the opclass, and using a (negative) value that cannot be encoded in the element to indicate it's not present.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 21c3f8f95554feff9bed15703e89adbe582e0383 · fixed in 099aadb2012d7490bc584cc5075ef11cbc33f2c3; From 21c3f8f95554feff9bed15703e89adbe582e0383 · fixed in e7bc5ab93acd1c3f54feeb9fa19ead3530168090; From 21c3f8f95554feff9bed15703e89adbe582e0383 · fixed in eef374088450bb91626e133c7172b8a0e969a522; From 21c3f8f95554feff9bed15703e89adbe582e0383 · fixed in cf57f0a674cc3e3cda1a789359cc1238b61b9d7d
- Linux Linux
6.9
- KernelLinux
From 6.9.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6