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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-68362

wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 to < 66bf998b18334ca97321433e4ab783b6ff267e9daffected
  • 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 to < e517e207300edcf7f3a8f6c45f9155c0e419ffb9affected
  • 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 to < d6bba659ac30d862ee7bab92862cd6e514f07521affected
  • 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 to < e5394605f9a985cc3a8263e610ba84b33cbe7b0caffected
  • 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 to < 4abb4e284d8897176e91d7a3168ee29ed876bb41affected
  • 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 to < e8d85672dd7e2523f774caafba8f858384e18df7affected

Linux Linux

Default version status: affected

  • 6.1affected
  • 0 to < 6.1unaffected
  • 6.1.183 to ≤ 6.1.*unaffected
  • 6.6.148 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.42 to ≤ 6.18.*unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References