CVE-2026-97442

wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi

CVSS 3.1 8.8 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-97442

Published

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi In certain cases, hardware might provide packets with a length greater than the maximum native Wi-Fi header length. This can lead to accessing and modifying fields in the header within the ath11k_dp_rx_h_undecap_nwifi() function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and potentially result in invalid data access and memory corruption. Kernel stack is corrupted in: ath11k_dp_rx_h_undecap+0x6b0/0x6b0 [ath11k] Call trace: ath11k_dp_rx_h_mpdu+0x0/0x2e8 [ath11k] ath11k_dp_rx_h_mpdu+0x1e0/0x2e8 [ath11k] ath11k_dp_rx_wbm_err+0x1e0/0x450 [ath11k] ath11k_dp_rx_process_wbm_err+0x2fc/0x460 [ath11k] ath11k_dp_service_srng+0x2e0/0x348 [ath11k] Add a sanity check before processing the SKB to prevent invalid data access in the undecap native Wi-Fi function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type. This adapted from the discussion/patch of the ath12k driver [1]. Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04685-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-97442

Published

Linux

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/ath/ath11k/dp_rx.c"
                    ],
                    "versions": [
                        {
                            "version": "acc79d981c1462b22a7a2cb0d39725f8c01fc425",
                            "lessThan": "958cf3696ddc5ccafd3d0b8b0c03d90bcd771c0c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "acc79d981c1462b22a7a2cb0d39725f8c01fc425",
                            "lessThan": "b4ef30f1d107aae460edf731a7c2d187fbc46a32",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "acc79d981c1462b22a7a2cb0d39725f8c01fc425",
                            "lessThan": "1c0a13be76db3c1cf774aa11d9f4c3f8239ac567",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "acc79d981c1462b22a7a2cb0d39725f8c01fc425",
                            "lessThan": "00738665c875ab34efa7126ea63c9d70b48ee169",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "acc79d981c1462b22a7a2cb0d39725f8c01fc425",
                            "lessThan": "6b471e9aefee9ed73278eb1141e0d8530a56fae9",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/ath/ath11k/dp_rx.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON