wifi: mac80211: sdata can be NULL during AMPDU start

{
  "id": "d1a745c073d843501094e717f6ec93d64fd495e18ccde962b7525c11dec35586",
  "url": "https://osv.dev/vulnerability/CVE-2022-48875",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mac80211: sdata can be NULL during AMPDU start",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: sdata can be NULL during AMPDU start ieee80211_tx_ba_session_handle_start() may get NULL for sdata when a deauthentication is ongoing. Here a trace triggering the race with the hostapd test multi_ap_fronthaul_on_ap: (gdb) list *drv_ampdu_action+0x46 0x8b16 is in drv_ampdu_action (net/mac80211/driver-ops.c:396). 391 int ret = -EOPNOTSUPP; 392 393 might_sleep(); 394 395 sdata = get_bss_sdata(sdata); 396 if (!check_sdata_in_driver(sdata)) 397 return -EIO; 398 399 trace_drv_ampdu_action(local, sdata, params); 400 wlan0: moving STA 02:00:00:00:03:00 to state 3 wlan0: associated wlan0: deauthenticating from 02:00:00:00:03:00 by local choice (Reason: 3=DEAUTH_LEAVING) wlan3.sta1: Open BA session requested for 02:00:00:00:00:00 tid 0 wlan3.sta1: dropped frame to 02:00:00:00:00:00 (unauthorized port) wlan0: moving STA 02:00:00:00:03:00 to state 2 wlan0: moving STA 02:00:00:00:03:00 to state 1 wlan0: Removed STA 02:00:00:00:03:00 wlan0: Destroyed STA 02:00:00:00:03:00 BUG: unable to handle page fault for address: fffffffffffffb48 PGD 11814067 P4D 11814067 PUD 11816067 PMD 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 2 PID: 133397 Comm: kworker/u16:1 Tainted: G W 6.1.0-rc8-wt+ #59 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014 Workqueue: phy3 ieee80211_ba_session_work [mac80211] RIP: 0010:drv_ampdu_action+0x46/0x280 [mac80211] Code: 53 48 89 f3 be 89 01 00 ",
    "evidence": "osv:CVE-2022-48875",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.165",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.90",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-48875",
      "aliases": [
        "CVE-2022-48875"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0ab337032a0dfcd5f2527d3306d3deeba5f95b59"
                },
                {
                  "fixed": "187523fa7c2d4c780f775cb869216865c4a909ef"
                },
                {
                  "fixed": "a12fd43bd175fa52c82f9740179d38c34ca1b62e"
                },
                {
                  "fixed": "c838df8461a601b20dc1b9fb1834d2aad8e2f949"
                },
                {
                  "fixed": "69403bad97aa0162e3d7911b27e25abe774093df"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48875.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.36"
                },
                {
                  "fixed": "5.10.165"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.90"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48875.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.395770555Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/187523fa7c2d4c780f775cb869216865c4a909ef",
        "https://git.kernel.org/stable/c/69403bad97aa0162e3d7911b27e25abe774093df",
        "https://git.kernel.org/stable/c/a12fd43bd175fa52c82f9740179d38c34ca1b62e",
        "https://git.kernel.org/stable/c/c838df8461a601b20dc1b9fb1834d2aad8e2f949",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48875.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-48875",
        "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/2022/48xxx/CVE-2022-48875.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-48875",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 514491,
  "published_at": "2024-08-21T06:10:06.207+00:00"
}