CVE-2026-92496 (GCVE-0-2026-92496)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10
VLAI
Title
wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx() Currently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read without first verifying that the buffer has enough data to hold a header. This could result in a buffer overread. Add an upfront length check before dereferencing skb->data as a wmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event() call to preserve the existing trace semantics (tracing the full raw WMI event including the header), unlike the analogous ath12k fix which could use skb_pull_data() directly. Compile tested only.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 20166fd9a4ad15d7eccc63c9dc99680aea6558ef (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 71690d26c1415e816158b45ee354367244c50d4c (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < f9726f6d97dca94ab14739c8b632301a940a7e8f (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 2677fc48dd10dc08cdec99c2692d50fe5f48dcbf (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 9652e7e23137538169f60323300cae3413475685 (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 72a5e45f606ec454ef556a68ffd92e06b0677f44 (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1 (git)
Affected: d5c65159f2895379e11ca13f62feabe93278985d , < 9ef9dd30058cc9223c72f711dca1a28a5947d0c5 (git)
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Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()\n\nCurrently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read\nwithout first verifying that the buffer has enough data to hold a\nheader. This could result in a buffer overread.\n\nAdd an upfront length check before dereferencing skb-\u003edata as a\nwmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event()\ncall to preserve the existing trace semantics (tracing the full raw\nWMI event including the header), unlike the analogous ath12k fix which\ncould use skb_pull_data() directly.\n\nCompile tested only."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:11.423Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/20166fd9a4ad15d7eccc63c9dc99680aea6558ef"
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        {
          "url": "https://git.kernel.org/stable/c/71690d26c1415e816158b45ee354367244c50d4c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9726f6d97dca94ab14739c8b632301a940a7e8f"
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    "dateReserved": "2026-09-16T12:21:13.871Z",
    "dateUpdated": "2026-09-17T16:10:11.423Z",
    "state": "PUBLISHED"
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      "date": "2026-09-29",
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      "cve": "CVE-2026-92496",
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      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-92496.json",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()\n\nCurrently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read\nwithout first verifying that the buffer has enough data to hold a\nheader. This could result in a buffer overread.\n\nAdd an upfront length check before dereferencing skb-\u003edata as a\nwmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event()\ncall to preserve the existing trace semantics (tracing the full raw\nWMI event including the header), unlike the analogous ath12k fix which\ncould use skb_pull_data() directly.\n\nCompile tested only."
          }
        ],
        "id": "CVE-2026-92496",
        "lastModified": "2026-09-17T17:17:51.800",
        "metrics": {},
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-22T16:26:52Z",
      "cve": "CVE-2026-92496",
      "id": "CVE-2026-92496",
      "initial_release_date": "2026-09-22T16:26:52Z",
      "product_status:known_affected": "126",
      "product_status:known_not_affected": "221",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-92496",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-92496.json",
      "version": "2"
    }
  }
}



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