Riskcovery

CVE-2026-98338

wifi: cfg80211: ibss: ref BSS entry for joined event

State
Published
Severity
Not scored
Published
Oct 6, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: ibss: ref BSS entry for joined event

When the IBSS is joined, we only record the BSSID/channel in the event and look up the BSS entry when processing it. However, that's racy, e.g. a new scan with NL80211_SCAN_FLAG_FLUSH can remove it, causing a warning in the event work:

!bss WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440 Workqueue: cfg80211 cfg80211_event_work cfg80211_process_wdev_events+0x39f/0x5b0 net/wireless/util.c:1144 cfg80211_process_rdev_events+0xa1/0x110 net/wireless/util.c:1179 cfg80211_event_work+0x2f/0x40 net/wireless/core.c:393

Do the lookup early (the driver is expected to only join an IBSS that has a BSS entry) and keep a reference to it.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 667503ddcb96f3b10211f997fe55907fa7509841 to before b0e3f019e461ac42e45aa3ec1216cefaca2f4a8bAffected
  • 667503ddcb96f3b10211f997fe55907fa7509841 to before 708f9d43d6a2eb9c6b83fe62af628de9dffd9314Affected
LinuxLinux
  • 2.6.32Affected
  • before 2.6.32Not affected
  • 7.2.8 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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