{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38606",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:24.028Z",
        "datePublished": "2025-08-19T17:03:50.189Z",
        "dateUpdated": "2026-05-11T21:31:28.971Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:31:28.971Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: Avoid accessing uninitialized arvif->ar during beacon miss\n\nDuring beacon miss handling, ath12k driver iterates over active virtual\ninterfaces (vifs) and attempts to access the radio object (ar) via\narvif->deflink->ar.\n\nHowever, after commit aa80f12f3bed (\"wifi: ath12k: defer vdev creation for\nMLO\"), arvif is linked to a radio only after vdev creation, typically when\na channel is assigned or a scan is requested.\nFor P2P capable devices, a default P2P interface is created by\nwpa_supplicant along with regular station interfaces, these serve as dummy\ninterfaces for P2P-capable stations, lack an associated netdev and initiate\nfrequent scans to discover neighbor p2p devices. When a scan is initiated\non such P2P vifs, driver selects destination radio (ar) based on scan\nfrequency, creates a scan vdev, and attaches arvif to the radio. Once the\nscan completes or is aborted, the scan vdev is deleted, detaching arvif\nfrom the radio and leaving arvif->ar uninitialized.\n\nWhile handling beacon miss for station interfaces, P2P interface is also\nencountered in the vif iteration and ath12k_mac_handle_beacon_miss_iter()\ntries to dereference the uninitialized arvif->deflink->ar.\n\nFix this by verifying that vdev is created for the arvif before accessing\nits ar during beacon miss handling and similar vif iterator callbacks.\n\n==========================================================================\n wlp6s0: detected beacon loss from AP (missed 7 beacons) - probing\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n\n CPU: 5 UID: 0 PID: 0 Comm: swapper/5 Not tainted 6.16.0-rc1-wt-ath+ #2 PREEMPT(full)\n RIP: 0010:ath12k_mac_handle_beacon_miss_iter+0xb5/0x1a0 [ath12k]\n Call Trace:\n  __iterate_interfaces+0x11a/0x410 [mac80211]\n  ieee80211_iterate_active_interfaces_atomic+0x61/0x140 [mac80211]\n  ath12k_mac_handle_beacon_miss+0xa1/0xf0 [ath12k]\n  ath12k_roam_event+0x393/0x560 [ath12k]\n  ath12k_wmi_op_rx+0x1486/0x28c0 [ath12k]\n  ath12k_htc_process_trailer.isra.0+0x2fb/0x620 [ath12k]\n  ath12k_htc_rx_completion_handler+0x448/0x830 [ath12k]\n  ath12k_ce_recv_process_cb+0x549/0x9e0 [ath12k]\n  ath12k_ce_per_engine_service+0xbe/0xf0 [ath12k]\n  ath12k_pci_ce_workqueue+0x69/0x120 [ath12k]\n  process_one_work+0xe3a/0x1430\n\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/ath/ath12k/mac.c",
                        "drivers/net/wireless/ath/ath12k/p2p.c"
                    ],
                    "versions": [
                        {
                            "version": "aa80f12f3bedc2d73e4cc43554aee44c277cc938",
                            "lessThan": "9b861dfc5c07defd0191fd3e7288a3179cd9a02e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa80f12f3bedc2d73e4cc43554aee44c277cc938",
                            "lessThan": "1259b6da8303f70fef6ed4aef8ae3dedfecb0f27",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "aa80f12f3bedc2d73e4cc43554aee44c277cc938",
                            "lessThan": "36670b67de18f1e5d34900c5d2ac60a8970c293c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/ath/ath12k/mac.c",
                        "drivers/net/wireless/ath/ath12k/p2p.c"
                    ],
                    "versions": [
                        {
                            "version": "6.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.14",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.10",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.1",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.15.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.16.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.17"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/9b861dfc5c07defd0191fd3e7288a3179cd9a02e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1259b6da8303f70fef6ed4aef8ae3dedfecb0f27"
                },
                {
                    "url": "https://git.kernel.org/stable/c/36670b67de18f1e5d34900c5d2ac60a8970c293c"
                }
            ],
            "title": "wifi: ath12k: Avoid accessing uninitialized arvif->ar during beacon miss",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}