CVE-2026-68362wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin In ATH11K_QMI_EVENT_FW_READY, ATH11K_FLAG_REGISTERED is set unconditionally even when ath11k_core_qmi_firmware_ready() fails. This leaves the driver in an inconsistent state where initialization is considered complete although the firmware ready handling did not finish successfully. During the subsequent SSR, the driver enters the restart path based on this incorrect state and dereferences uninitialized srng members, resulting in a NULL pointer dereference. Call trace: ath11k_hal_srng_access_begin+0xc/0x60 [ath11k] (P) ath11k_ce_cleanup_pipes+0x17c/0x180 [ath11k] ath11k_core_restart+0x40/0x168 [ath11k] Fix this by: - skipping firmware_ready if ATH11K_FLAG_REGISTERED is already set - setting ATH11K_FLAG_REGISTERED only when firmware_ready succeeds - setting ATH11K_FLAG_QMI_FAIL and aborting the FW_READY handling on error Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 before 66bf998b18334ca97321433e4ab783b6ff267e9d; from 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 before e517e207300edcf7f3a8f6c45f9155c0e419ffb9; from 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 before d6bba659ac30d862ee7bab92862cd6e514f07521; from 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 before e5394605f9a985cc3a8263e610ba84b33cbe7b0c; 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 builds before 4abb4e284d8897176e91d7a3168ee29ed876bb41; from 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 before e8d85672dd7e2523f774caafba8f858384e18df7 | CNA record |
References
- https://git.kernel.org/stable/c/66bf998b18334ca97321433e4ab783b6ff267e9d
- https://git.kernel.org/stable/c/e517e207300edcf7f3a8f6c45f9155c0e419ffb9
- https://git.kernel.org/stable/c/d6bba659ac30d862ee7bab92862cd6e514f07521
- https://git.kernel.org/stable/c/e5394605f9a985cc3a8263e610ba84b33cbe7b0c
- https://git.kernel.org/stable/c/4abb4e284d8897176e91d7a3168ee29ed876bb41
- https://git.kernel.org/stable/c/e8d85672dd7e2523f774caafba8f858384e18df7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.