CVE-2021-47194: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
First published: Wed Apr 10 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type If the userspace tools switch from NL80211_IFTYPE_P2P_GO to NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it does not call the cleanup cfg80211_stop_ap(), this leads to the initialization of in-use data. For example, this path re-init the sdata->assigned_chanctx_list while it is still an element of assigned_vifs list, and makes that linked list corrupt.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=3.6.0<4.4.293 | |
| Linux Linux kernel | >=4.5.0<4.9.291 | |
| Linux Linux kernel | >=4.10.0<4.14.256 | |
| Linux Linux kernel | >=4.15.0<4.19.218 | |
| Linux Linux kernel | >=4.20.0<5.4.162 | |
| Linux Linux kernel | >=5.5.0<5.10.82 | |
| Linux Linux kernel | >=5.11.0<5.15.5 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.6-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc
- https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21
- https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13
- https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2
- https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd
- https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66
- https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24
- https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec
- https://launchpad.net/bugs/cve/CVE-2021-47194
- https://git.kernel.org/linus/563fbefed46ae4c1f70cffb8eb54c02df480b2c2
- https://security-tracker.debian.org/tracker/CVE-2021-47194
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47194
- https://nvd.nist.gov/vuln/detail/CVE-2021-47194
- https://ubuntu.com/security/CVE-2021-47194
- agent/title
- agent/type
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- agent/remedy
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/references
- agent/tags
- collector/nvd-cve
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/3.6.0
- version/linux linux kernel/4.5.0
- version/linux linux kernel/4.10.0
- version/linux linux kernel/4.15.0
- version/linux linux kernel/4.20.0
- version/linux linux kernel/5.5.0
- version/linux linux kernel/5.11.0
- package-manager/debian