HighFix available

wifi: rtl818x: Kill URBs before clearing tx status queue

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Kill URBs before clearing tx status queue In rtl8187_stop() move the call of usb_kill_anchored_urbs() before clearing b_tx_status.queue. This change prevents callbacks from using already freed skb due to anchor was not killed before freeing such skb. BUG: kernel NULL pointer dereference, address: 0000000000000080 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Not tainted 6.15.0 #8 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015 RIP: 0010:ieee80211_tx_status_irqsafe+0x21/0xc0 [mac80211] Call Trace: rtl8187_tx_cb+0x116/0x150 [rtl8187] __usb_hcd_giveback_urb+0x9d/0x120 usb_giveback_urb_bh+0xbb/0x140 process_one_work+0x19b/0x3c0 bh_worker+0x1a7/0x210 tasklet_action+0x10/0x30 handle_softirqs+0xf0/0x340 __irq_exit_rcu+0xcd/0xf0 common_interrupt+0x85/0xa0 Tested on RTL8187BvE device. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Products: Kernel
Affected versions: Not specified
Fixed versions: 5.10.241, 5.15.190, 5.4.297, 6.1.148, 6.12.42, 6.15.10, 6.16.1, 6.6.102
CVEs: CVE-2025-38604
Confirmed fixed CVEs: Not specified
Updated in this feed: 8 Nov 2026, 01:51 UTC · Revision 1

Source evidence

wifi: rtl818x: Kill URBs before clearing tx status queue

core-osv · Original source

Published 19 Aug 2025, 17:03 UTC

osv:CVE-2025-38604

Kernel

Fixed versions: 5.4.297, 5.10.241, 5.15.190, 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1

Complete source record

{
  "id": "36fffb75b741dd726fff47bbc52bcbe5e271d60980684919d7ba235112d403dd",
  "url": "https://osv.dev/vulnerability/CVE-2025-38604",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: rtl818x: Kill URBs before clearing tx status queue",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Kill URBs before clearing tx status queue In rtl8187_stop() move the call of usb_kill_anchored_urbs() before clearing b_tx_status.queue. This change prevents callbacks from using already freed skb due to anchor was not killed before freeing such skb. BUG: kernel NULL pointer dereference, address: 0000000000000080 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Not tainted 6.15.0 #8 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015 RIP: 0010:ieee80211_tx_status_irqsafe+0x21/0xc0 [mac80211] Call Trace: rtl8187_tx_cb+0x116/0x150 [rtl8187] __usb_hcd_giveback_urb+0x9d/0x120 usb_giveback_urb_bh+0xbb/0x140 process_one_work+0x19b/0x3c0 bh_worker+0x1a7/0x210 tasklet_action+0x10/0x30 handle_softirqs+0xf0/0x340 __irq_exit_rcu+0xcd/0xf0 common_interrupt+0x85/0xa0 Tested on RTL8187BvE device. Found by Linux Verification Center (linuxtesting.org) with SVACE.",
    "evidence": "osv:CVE-2025-38604",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.297",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.241",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.190",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.148",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.102",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.42",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.10",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-38604",
      "aliases": [
        "CVE-2025-38604"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c1db52b9d27ee6e15a7136e67e4a21dc916cd07f"
                },
                {
                  "fixed": "e64732ebff9e24258e7326f07adbe2f2b990daf8"
                },
                {
                  "fixed": "789415771422f4fb9f444044f86ecfaec55df1bd"
                },
                {
                  "fixed": "c73c773b09e313278f9b960303a2809b8440bac6"
                },
                {
                  "fixed": "8c767727f331fb9455b0f81daad832b5925688cb"
                },
                {
                  "fixed": "14ca6952691fa8cc91e7644512e6ff24a595283f"
                },
                {
                  "fixed": "7858a95566f4ebf59524666683d2dcdba3fca968"
                },
                {
                  "fixed": "c51a45ad9070a6d296174fcbe5c466352836c12b"
                },
                {
                  "fixed": "81cfe34d0630de4e23ae804dcc08fb6f861dc37d"
                },
                {
                  "fixed": "16d8fd74dbfca0ea58645cd2fca13be10cae3cdd"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38604.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.29"
                },
                {
                  "fixed": "5.4.297"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.241"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.190"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.148"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.102"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.42"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.15.10"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.16.0"
                },
                {
                  "fixed": "6.16.1"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38604.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.042905406Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/14ca6952691fa8cc91e7644512e6ff24a595283f",
        "https://git.kernel.org/stable/c/16d8fd74dbfca0ea58645cd2fca13be10cae3cdd",
        "https://git.kernel.org/stable/c/7858a95566f4ebf59524666683d2dcdba3fca968",
        "https://git.kernel.org/stable/c/789415771422f4fb9f444044f86ecfaec55df1bd",
        "https://git.kernel.org/stable/c/81cfe34d0630de4e23ae804dcc08fb6f861dc37d",
        "https://git.kernel.org/stable/c/8c767727f331fb9455b0f81daad832b5925688cb",
        "https://git.kernel.org/stable/c/c51a45ad9070a6d296174fcbe5c466352836c12b",
        "https://git.kernel.org/stable/c/c73c773b09e313278f9b960303a2809b8440bac6",
        "https://git.kernel.org/stable/c/e64732ebff9e24258e7326f07adbe2f2b990daf8",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38604.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38604",
        "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/2025/38xxx/CVE-2025-38604.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38604",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521519,
  "published_at": "2025-08-19T17:03:43.358+00:00"
}