CVE-2025-38293
wifi: ath11k: fix node corruption in ar->arvifs list
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wifi: ath11k: fix node corruption in ar->arvifs list
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
Reserved 2025-04-16 | Published 2025-07-10 | Updated 2025-07-10 | Assigner Linuxgit.kernel.org/...c/6c139015b597e570dd5962934e9f9a2f4cc8ef48
git.kernel.org/...c/f9507cf2dd0e1ed5028c0e8240da6fe5fd3110d3
git.kernel.org/...c/b0974ed82e6ad5ff246fd90a5b14f3e7be4f2924
git.kernel.org/...c/f50ba7e7b607f2d00618799312e7fdb76a1ff48e
git.kernel.org/...c/f5d77d0d41ea7a204d47288d0cf0404a52b5890e
git.kernel.org/...c/6d6cb27fe146061f2512e904618f5e005bb7bb6a
git.kernel.org/...c/31e98e277ae47f56632e4d663b1d4fd12ba33ea8
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