CVE-2026-68362 (GCVE-0-2026-68362)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:34
VLAI
Title
wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin
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
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 , < 66bf998b18334ca97321433e4ab783b6ff267e9d (git)
Affected: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 , < e517e207300edcf7f3a8f6c45f9155c0e419ffb9 (git)
Affected: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 , < d6bba659ac30d862ee7bab92862cd6e514f07521 (git)
Affected: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 , < e5394605f9a985cc3a8263e610ba84b33cbe7b0c (git)
Affected: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 , < 4abb4e284d8897176e91d7a3168ee29ed876bb41 (git)
Affected: 6fe62a8cec51c756159c71be35a16b2cc8cbd4c0 , < e8d85672dd7e2523f774caafba8f858384e18df7 (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "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"
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        "shortName": "Linux"
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    "datePublished": "2026-08-10T12:03:39.363Z",
    "dateReserved": "2026-07-30T09:28:09.385Z",
    "dateUpdated": "2026-08-19T16:34:15.793Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-13T10:20:38+00:00",
      "cve": "CVE-2026-68362",
      "id": "CVE-2026-68362",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "44",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68362.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-14T17:13:56Z",
      "cve": "CVE-2026-68362",
      "id": "CVE-2026-68362",
      "initial_release_date": "2026-08-14T17:13:56Z",
      "product_status:known_affected": "30",
      "product_status:known_not_affected": "266",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68362",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68362.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.