CVE-2025-38293

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

wifi: ath11k: fix node corruption in ar->arvifs list

In current WLAN recovery code flow, ath11k_core_halt() only

reinitializes the "arvifs" list head. This will cause the

list node immediately following the list head to become an

invalid list node. Because the prev of that node still points

to the list head "arvifs", but the next of the list head "arvifs"

no longer points to that list node.

When a WLAN recovery occurs during the execution of a vif

removal, and it happens before the spin_lock_bh(&ar->data_lock)

in ath11k_mac_op_remove_interface(), list_del() will detect the

previously mentioned situation, thereby triggering a kernel panic.

The fix is to remove and reinitialize all vif list nodes from the

list head "arvifs" during WLAN halt. The reinitialization is to make

the list nodes valid, ensuring that the list_del() in

ath11k_mac_op_remove_interface() can execute normally.

Call trace:

__list_del_entry_valid_or_report+0xb8/0xd0

ath11k_mac_op_remove_interface+0xb0/0x27c [ath11k]

drv_remove_interface+0x48/0x194 [mac80211]

ieee80211_do_stop+0x6e0/0x844 [mac80211]

ieee80211_stop+0x44/0x17c [mac80211]

__dev_close_many+0xac/0x150

__dev_change_flags+0x194/0x234

dev_change_flags+0x24/0x6c

devinet_ioctl+0x3a0/0x670

inet_ioctl+0x200/0x248

sock_do_ioctl+0x60/0x118

sock_ioctl+0x274/0x35c

__arm64_sys_ioctl+0xac/0xf0

invoke_syscall+0x48/0x114

...

Tested-on: QCA6698AQ hw2.1 PCI WLAN.HSP.1.1-04591-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1