CVE-2026-68362 (GCVE-0-2026-68362)
Vulnerability from cvelistv5
Published
2026-08-10 12:03
Modified
2026-08-19 16:34
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 Version: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 Version: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 Version: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 Version: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 Version: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 |
||
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin\n\nIn ATH11K_QMI_EVENT_FW_READY, ATH11K_FLAG_REGISTERED is set\nunconditionally even when ath11k_core_qmi_firmware_ready() fails.\nThis leaves the driver in an inconsistent state where\ninitialization is considered complete although the firmware ready\nhandling did not finish successfully. During the subsequent SSR,\nthe driver enters the restart path based on this incorrect state\nand dereferences uninitialized srng members, resulting in a NULL\npointer dereference.\n\nCall trace:\n ath11k_hal_srng_access_begin+0xc/0x60 [ath11k] (P)\n ath11k_ce_cleanup_pipes+0x17c/0x180 [ath11k]\n ath11k_core_restart+0x40/0x168 [ath11k]\n\nFix this by:\n- skipping firmware_ready if ATH11K_FLAG_REGISTERED is already set\n- setting ATH11K_FLAG_REGISTERED only when firmware_ready succeeds\n- setting ATH11K_FLAG_QMI_FAIL and aborting the FW_READY handling\non error\n\nTested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1"
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:34:15.793Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/66bf998b18334ca97321433e4ab783b6ff267e9d"
},
{
"url": "https://git.kernel.org/stable/c/e517e207300edcf7f3a8f6c45f9155c0e419ffb9"
},
{
"url": "https://git.kernel.org/stable/c/d6bba659ac30d862ee7bab92862cd6e514f07521"
},
{
"url": "https://git.kernel.org/stable/c/e5394605f9a985cc3a8263e610ba84b33cbe7b0c"
},
{
"url": "https://git.kernel.org/stable/c/4abb4e284d8897176e91d7a3168ee29ed876bb41"
},
{
"url": "https://git.kernel.org/stable/c/e8d85672dd7e2523f774caafba8f858384e18df7"
}
],
"title": "wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-68362",
"datePublished": "2026-08-10T12:03:39.363Z",
"dateReserved": "2026-07-30T09:28:09.385Z",
"dateUpdated": "2026-08-19T16:34:15.793Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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