{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0"
            },
            {
              "fixed": "966fbed4b4463fbcb49c5becf3f86eae776861bd"
            },
            {
              "fixed": "05d46e30303275f21f13c951166d39c85df976d4"
            },
            {
              "fixed": "7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f"
            },
            {
              "fixed": "140fa699cfd0e18ab2f1497acd951fb3548610f5"
            },
            {
              "fixed": "08fdcb529df6df3562dd2b0035f88dd5be8b3c68"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74411.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: Correct data type for scan index to avoid infinite loop\n\nA kernel soft lockup was observed during Wi-Fi scanning on the 6GHz band.\nThe CPU becomes stuck in rtw89_hw_scan_add_chan_ax for over 20 seconds,\nleading to a system panic.\n\nRIP points to 0f b6 c3 (movzbl %bl, %eax), which zero-extends\nthe low 8 bits of RBX into RAX.\nRBX (the counter i) has reached a huge value: 0x137466a1.\n\n  watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [kworker/u16:4:6124]\n  Workqueue: events_unbound cfg80211_wiphy_work [cfg80211]\n  RIP: 0010:rtw89_hw_scan_add_chan_ax+0xb3/0x6e0 [rtw89_core]\n  Code: a0 48 89 45 a8 44 89 6d 9c 44 89 75 98 eb 29 66 66 2e 0f 1f\n  84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 c3 01\n  \u003c0f\u003e b6 c3 41 3b 44 24 74 0f 83 0b 02 00 00 0f b6 c3 48 8d 14 80 49\n  RSP: 0018:ffffcb48cbaa39f8 EFLAGS: 00000202\n  RAX: 0000000000000005 RBX: 00000000137466a1 RCX: 0000000000000000\n  RDX: ffff89ffc9d851a8 RSI: 0000000000004f0d RDI: 0000000096af0130\n  RBP: ffffcb48cbaa3a60 R08: 0000000000000000 R09: ffff8a00b7502080\n  R10: ffff8a00b75ff600 R11: 0000000000000000 R12: ffff89ffc7553870\n  R13: ffff8a00b7ac8f19 R14: ffff8a00b75020d8 R15: ffff89ffc3d54d80\n  FS:  0000000000000000(0000) GS:ffff8a014f962000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00007558d7f9f4c4 CR3: 0000000178040001 CR4: 00000000001706f0\n  Call Trace:\n   \u003cTASK\u003e\n   rtw89_hw_scan_prep_chan_list_ax+0x8a/0x400 [rtw89_core]\n   rtw89_hw_scan_start+0x546/0x8a0 [rtw89_core]\n   ? rtw89_fw_h2c_default_cmac_tbl+0x13c/0x1f0 [rtw89_core]\n   rtw89_ops_hw_scan+0xae/0x120 [rtw89_core]\n   drv_hw_scan+0xbb/0x180 [mac80211]\n   __ieee80211_start_scan+0x2fc/0x750 [mac80211]\n   ieee80211_request_scan+0xe/0x20 [mac80211]\n   ieee80211_scan+0x123/0x190 [mac80211]\n   rdev_scan+0x40/0x110 [cfg80211]\n   cfg80211_scan_6ghz+0x5a1/0xa30 [cfg80211]\n\nBy objdump with source:\n\n\tfor (i = 0; i \u003c req-\u003en_6ghz_params; i++) {\n   5fbc0:\t83 c3 01             \tadd    $0x1,%ebx --\u003e i++\n   5fbc3:\t0f b6 c3             \tmovzbl %bl,%eax  --\u003e get counter\n   fbc6:\t41 3b 44 24 74       \tcmp    0x74(%r12),%eax\n\n   * RBX: 00000000137466a1 -\u003e %bl = a1 -\u003e EAX = 000000a1 (161)",
  "id": "CVE-2026-74411",
  "modified": "2026-08-16T03:30:57.548180818Z",
  "published": "2026-08-15T05:59:18.696Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74411.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74411"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: rtw89: Correct data type for scan index to avoid infinite loop"
}