Not yet scoredPublished Aug 10, 2026

CVE-2026-68362wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin

Updated under an hour ago (Oct 26, 2026, 3:00 PM ET)

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Exploited in the last 30 days

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

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

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.