wireguard: receive: annotate data-race around receiving_counter.counter

{
  "id": "a171bf5671ab1444aeeb47104809e8e1ba360a99312503433069314e4e4136d5",
  "url": "https://osv.dev/vulnerability/CVE-2024-26861",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wireguard: receive: annotate data-race around receiving_counter.counter",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wireguard: receive: annotate data-race around receiving_counter.counter Syzkaller with KCSAN identified a data-race issue when accessing keypair->receiving_counter.counter. Use READ_ONCE() and WRITE_ONCE() annotations to mark the data race as intentional. BUG: KCSAN: data-race in wg_packet_decrypt_worker / wg_packet_rx_poll write to 0xffff888107765888 of 8 bytes by interrupt on cpu 0: counter_validate drivers/net/wireguard/receive.c:321 [inline] wg_packet_rx_poll+0x3ac/0xf00 drivers/net/wireguard/receive.c:461 __napi_poll+0x60/0x3b0 net/core/dev.c:6536 napi_poll net/core/dev.c:6605 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6738 __do_softirq+0xc4/0x279 kernel/softirq.c:553 do_softirq+0x5e/0x90 kernel/softirq.c:454 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_decrypt_worker+0x6c5/0x700 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:2633 [inline] ... read to 0xffff888107765888 of 8 bytes by task 3196 on cpu 1: decrypt_packet drivers/net/wireguard/receive.c:252 [inline] wg_packet_decrypt_worker+0x220/0x700 drivers/net/wireguard/receive.c:501 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x5b8/0xa30 kern",
    "evidence": "osv:CVE-2024-26861",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.214",
            "evidence": "/affected/1/ranges"
          },
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          },
          {
            "value": "6.8.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-26861",
      "aliases": [
        "CVE-2024-26861"
      ],
      "affected": [
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                  "fixed": "fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed"
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      ],
      "modified": "2026-10-28T02:30:32.834348237Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-265688.html",
        "https://git.kernel.org/stable/c/3f94da807fe1668b9830f0eefbbf7e887b0a7bc6",
        "https://git.kernel.org/stable/c/45a83b220c83e3c326513269afbf69ae6fc65cce",
        "https://git.kernel.org/stable/c/78739d72f16b2d7d549f713f1dfebd678d32484b",
        "https://git.kernel.org/stable/c/bba045dc4d996d03dce6fe45726e78a1a1f6d4c3",
        "https://git.kernel.org/stable/c/d691be84ab898cf136a35176eaf2f8fc116563f0",
        "https://git.kernel.org/stable/c/f87884e0dffd61b47e58bc6e1e2f6843c212b0cc",
        "https://git.kernel.org/stable/c/fdf16de078a97bf14bb8ee2b8d47cc3d3ead09ed",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26861.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26861",
        "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/2024/26xxx/CVE-2024-26861.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26861",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499818,
  "published_at": "2024-04-17T10:27:24.98+00:00"
}