{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-97595",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-24T16:01:01.157Z",
        "datePublished": "2026-09-25T10:22:11.134Z",
        "dateUpdated": "2026-09-25T14:41:28.874Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-25T14:41:28.874Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac802154: fix use-after-free of sdata via queued RX frames\n\nThe RX softirq producer ieee802154_subif_frame() queues received beacon\nand MAC-command frames onto local->rx_beacon_list / rx_mac_cmd_list and\nschedules a process-context worker, storing a raw mac_pkt->sdata (and\nskb->dev == sdata->dev) with neither a reference nor any locking:\n\n - the lists have no lock: the softirq producer list_add_tail()s while the\n   mac_wq worker list_del()s, so sibling interfaces on the same phy corrupt\n   the list;\n\n - the workers dereference the interface after it may have been freed.\n   mac802154_rx_mac_cmd_worker() touches mac_pkt->sdata directly, and\n   mac802154_rx_beacon_worker() -> mac802154_process_beacon() dereferences\n   skb->dev (== sdata->dev). Removing an interface frees its sdata\n   (netdev_priv) while a queued frame still points at it, so a later worker\n   run is a use-after-free.\n\nReproduced under KASAN by flooding a victim interface with MAC command\nframes and removing it (the beacon path is the same class via skb->dev):\n\n  BUG: KASAN: slab-use-after-free in mac802154_rx_mac_cmd_worker+0x463/0x630 [mac802154]\n  Read of size 4 at addr ffff888002f9ea18 by task kworker/u8:1/31\n  Workqueue: phy0-mac-cmds mac802154_rx_mac_cmd_worker [mac802154]\n  Call Trace:\n   mac802154_rx_mac_cmd_worker+0x463/0x630 [mac802154]\n   process_one_work+0x611/0xe80\n   worker_thread+0x52e/0xdc0\n   kthread+0x30c/0x630\n   ret_from_fork+0x2fd/0x3e0\n\nFix both lists together:\n\n - add local->rx_lock and take it around every list access: the softirq\n   producer (plain spin_lock, softirq context) and the workers and flush\n   (spin_lock_bh, process context);\n\n - pin the interface for the lifetime of a queued frame with\n   netdev_hold()/netdev_put(), so the worker can safely dereference sdata /\n   skb->dev even while the interface is being removed;\n\n - dequeue under the lock at the head and loop-drain the whole list in the\n   workers (they previously processed one frame per run and relied on a\n   later enqueue to drain the rest);\n\n - drop not-yet-started frames of an interface before it is unregistered,\n   from ieee802154_if_remove() (after the RCU grace period) and from the\n   ieee802154_remove_interfaces() loop -- the latter is the whole-phy\n   teardown path, which does not go through ieee802154_if_remove().\n\nAn in-flight worker that already dequeued a frame keeps its own netdev\nreference; unregister_netdevice() then waits it out in netdev_run_todo(),\nwhich runs at rtnl_unlock() (rtnl released) and after the interface has\nbeen closed, so it does not pin rtnl. A worker blocked in an association\nTX only delays that one interface's unregister (the usual \"waiting for %s\nto become free\"), it does not hold rtnl. netdev_hold() is used for this\nreason instead of a cancel_work_sync() under rtnl, which would block on\nthe worker's unbounded MLME TX wait via ieee802154_sync_queue().\n\nThe mac-command worker additionally skips processing for a stopped\ninterface (ieee802154_sdata_running()), avoiding a needless association\nresponse during teardown."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:A - ieee802154_subif_frame() queues every received IEEE 802.15.4 MAC command frame (and beacons during a scan) onto local->rx_mac_cmd_list/rx_beacon_list from the RX tasklet with no lock, so a sender in radio range supplies the frames that race the mac_wq worker; 802.15.4 is a radio link, so this is adjacent rather than network.\nAC:H - A remote attacker only reaches the bug by making the tasklet's unlocked list_add_tail() collide with the worker's list_del() on another CPU. They control the flood but not the worker's timing, and the window is a few pointer writes. The use-after-free of sdata also needs an interface removal that the remote attacker cannot cause.\nPR:N - __ieee802154_rx_handle_packet() hands every parsed frame to each running non-monitor interface, and ieee802154_subif_frame() queues MAC command frames with no association or scan state required; unsecured frames pass mac802154_llsec_decrypt(), so no credentials are needed.\nUI:N - The victim only needs a running 802.15.4 interface, which is its normal operating state; the attacker sends the frames and the kernel queues and processes them without any user action.\nS:U - The corruption stays within the host kernel (mac802154 RX lists, cfg802154_mac_pkt, netdev_priv sdata) and crosses no VM or IOMMU boundary.\nC:H - A corrupted rx_mac_cmd_list or rx_beacon_list lets the worker dereference freed cfg802154_mac_pkt entries, their skb and sdata. Reclaimed slab contents are then read as kernel pointers, a use-after-free read that can disclose kernel memory.\nI:H - The worker does list_del(), kfree() and kfree_skb() on stale mac_pkt entries, and mac802154_process_association_req/resp() write through the freed sdata, giving write and double-free primitives on reclaimable slab memory.\nA:H - List corruption or the sdata use-after-free in mac802154_rx_mac_cmd_worker() or mac802154_rx_beacon_worker() causes a kernel oops; the commit's KASAN report shows such a slab-use-after-free."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/cfg802154.h",
                        "net/mac802154/ieee802154_i.h",
                        "net/mac802154/iface.c",
                        "net/mac802154/main.c",
                        "net/mac802154/rx.c",
                        "net/mac802154/scan.c"
                    ],
                    "versions": [
                        {
                            "version": "57588c71177f0bfc08509c2c3a9bfe32850c0786",
                            "lessThan": "4740ef0518c5e3bf31ebfb2288a6ac3b462ead06",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "57588c71177f0bfc08509c2c3a9bfe32850c0786",
                            "lessThan": "07f0214018d7241e3610c1be984c8abfce16c099",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "57588c71177f0bfc08509c2c3a9bfe32850c0786",
                            "lessThan": "3d1fde35f95d7f02a7dc473c51d81e8d9e992cfc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "57588c71177f0bfc08509c2c3a9bfe32850c0786",
                            "lessThan": "2f37fba846c9fdff5fc15b6d93656057ccd13031",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/cfg802154.h",
                        "net/mac802154/ieee802154_i.h",
                        "net/mac802154/iface.c",
                        "net/mac802154/main.c",
                        "net/mac802154/rx.c",
                        "net/mac802154/scan.c"
                    ],
                    "versions": [
                        {
                            "version": "6.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.3",
                            "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": "7.2.7",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3-rc3",
                            "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": "6.3",
                                    "versionEndExcluding": "6.12.111"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "6.18.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "7.2.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "7.3-rc3"
                                }
                            ]
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4740ef0518c5e3bf31ebfb2288a6ac3b462ead06"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07f0214018d7241e3610c1be984c8abfce16c099"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3d1fde35f95d7f02a7dc473c51d81e8d9e992cfc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f37fba846c9fdff5fc15b6d93656057ccd13031"
                }
            ],
            "title": "mac802154: fix use-after-free of sdata via queued RX frames",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}