CVE-2026-98823
kernel: wifi: cfg80211: preserve hidden-group beacon IE ownership
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 24, 2026
Description
A flaw was found in the Linux kernel's cfg80211 wireless subsystem. This issue allows an adjacent attacker within wireless range to cause a Denial of Service (DoS) by crashing the system. During a channel switch, the kernel improperly manages memory ownership when merging wireless scan entries that borrow beacon information elements (IEs). Releasing these entries can result in a double-free condition, leading to kernel memory corruption.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1341 · Multiple Releases of Same Resource or Handle