Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.6.0, < 4.4.293 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebcPatch
- https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21Patch
- https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13Patch
- https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2Patch
- https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93ddPatch
- https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66Patch
- https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24Patch
- https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddecPatch
- https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebcPatch
- https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21Patch
- https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13Patch
- https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2Patch
- https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93ddPatch
- https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66Patch
- https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24Patch
FAQ
What is CVE-2021-47194?
CVE-2021-47194 is a vulnerability with a CVSS score of 7.8 (HIGH). 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_I...
How severe is CVE-2021-47194?
CVE-2021-47194 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47194?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.