Memory leak in Linux kernel - CVE-2026-98307
Published: October 7, 2026
Vulnerability identifier: #VU153721
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98307
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a memory leak.
The vulnerability exists due to missing release of station statistics allocations in ath11k_mac_peer_cleanup_all() when recovering from a firmware crash. A local user can encounter firmware-crash recovery with allocated station statistics to cause a memory leak.
The unreleased allocations are arsta->rx_stats and arsta->tx_stats. Recovery calls ieee80211_restart_hw(), which assumes that driver resources have already been cleaned up.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-98307
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.113-1
linux (Debian package) - update to 6.12.113-1