wifi: mac80211: Purge vif txq in ieee80211_do_stop()

{
  "id": "189598a8ec2c126cf69be4e49f2c927ee985680f9fd8db0bbeb1fd546261673b",
  "url": "https://osv.dev/vulnerability/CVE-2025-37794",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mac80211: Purge vif txq in ieee80211_do_stop()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Purge vif txq in ieee80211_do_stop() After ieee80211_do_stop() SKB from vif's txq could still be processed. Indeed another concurrent vif schedule_and_wake_txq call could cause those packets to be dequeued (see ieee80211_handle_wake_tx_queue()) without checking the sdata current state. Because vif.drv_priv is now cleared in this function, this could lead to driver crash. For example in ath12k, ahvif is store in vif.drv_priv. Thus if ath12k_mac_op_tx() is called after ieee80211_do_stop(), ahvif->ah can be NULL, leading the ath12k_warn(ahvif->ah,...) call in this function to trigger the NULL deref below. Unable to handle kernel paging request at virtual address dfffffc000000001 KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] batman_adv: bat0: Interface deactivated: brbh1337 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfffffc000000001] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] SMP CPU: 1 UID: 0 PID: 978 Comm: lbd Not tainted 6.13.0-g633f875b8f1e #114 Hardware name: HW (DT) pstate: 10000005 (nzcV daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ath12k_mac_op_tx+0x6cc/0x29b8 [",
    "evidence": "osv:CVE-2025-37794",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "5.4.293",
            "evidence": "/affected/1/ranges"
          },
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            "value": "5.10.237",
            "evidence": "/affected/1/ranges"
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          {
            "value": "5.15.181",
            "evidence": "/affected/1/ranges"
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        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-37794",
      "aliases": [
        "CVE-2025-37794"
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      "affected": [
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          "package": {
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            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:49.494853182Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/305741e7e63234cbcf9b5c4e6aeca25ba0834be8",
        "https://git.kernel.org/stable/c/378677eb8f44621ecc9ce659f7af61e5baa94d81",
        "https://git.kernel.org/stable/c/5f6863dc407f25fcf23fc857f9ac51756a09ea2c",
        "https://git.kernel.org/stable/c/8bc34db7f771a464ff8f686b6f8d4e04963fec27",
        "https://git.kernel.org/stable/c/929ec2c9ad34248ef625e137b6118b6e965797d9",
        "https://git.kernel.org/stable/c/a8df245b5b29f6de98d016dc18e2bb35ec70b0cb",
        "https://git.kernel.org/stable/c/a932a5ce4eee0cbad20220f950fe7bd3534bcbc9",
        "https://git.kernel.org/stable/c/c74b84544dee27298a71715b3ce2c40d372b5a23",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37794.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-37794",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37794.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-37794",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517762,
  "published_at": "2025-05-01T13:07:26.168+00:00"
}