CVE-2021-47194
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 this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-665
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
- https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddecPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.