{"api_version":"1","generated_at":"2026-08-15T08:45:14+00:00","cve":"CVE-2026-74411","urls":{"html":"https://cve.report/CVE-2026-74411","api":"https://cve.report/api/cve/CVE-2026-74411.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74411","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74411"},"summary":{"title":"wifi: rtw89: Correct data type for scan index to avoid infinite loop","description":"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  <0f> 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   <TASK>\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 < req->n_6ghz_params; i++) {\n   5fbc0:\t83 c3 01             \tadd    $0x1,%ebx --> i++\n   5fbc3:\t0f b6 c3             \tmovzbl %bl,%eax  --> get counter\n   fbc6:\t41 3b 44 24 74       \tcmp    0x74(%r12),%eax\n\n   * RBX: 00000000137466a1 -> %bl = a1 -> EAX = 000000a1 (161)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:43","updated_at":"2026-08-15 06:22:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4","name":"https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd","name":"https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5","name":"https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f","name":"https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68","name":"https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74411","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74411","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 966fbed4b4463fbcb49c5becf3f86eae776861bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 05d46e30303275f21f13c951166d39c85df976d4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 140fa699cfd0e18ab2f1497acd951fb3548610f5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0 08fdcb529df6df3562dd2b0035f88dd5be8b3c68 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/realtek/rtw89/fw.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"966fbed4b4463fbcb49c5becf3f86eae776861bd","status":"affected","version":"c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0","versionType":"git"},{"lessThan":"05d46e30303275f21f13c951166d39c85df976d4","status":"affected","version":"c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0","versionType":"git"},{"lessThan":"7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f","status":"affected","version":"c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0","versionType":"git"},{"lessThan":"140fa699cfd0e18ab2f1497acd951fb3548610f5","status":"affected","version":"c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0","versionType":"git"},{"lessThan":"08fdcb529df6df3562dd2b0035f88dd5be8b3c68","status":"affected","version":"c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/realtek/rtw89/fw.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"6.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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  <0f> 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   <TASK>\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 < req->n_6ghz_params; i++) {\n   5fbc0:\t83 c3 01             \tadd    $0x1,%ebx --> i++\n   5fbc3:\t0f b6 c3             \tmovzbl %bl,%eax  --> get counter\n   fbc6:\t41 3b 44 24 74       \tcmp    0x74(%r12),%eax\n\n   * RBX: 00000000137466a1 -> %bl = a1 -> EAX = 000000a1 (161)"}],"providerMetadata":{"dateUpdated":"2026-08-15T05:59:18.696Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd"},{"url":"https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4"},{"url":"https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f"},{"url":"https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5"},{"url":"https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68"}],"title":"wifi: rtw89: Correct data type for scan index to avoid infinite loop","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74411","datePublished":"2026-08-15T05:59:18.696Z","dateReserved":"2026-08-15T05:44:03.892Z","dateUpdated":"2026-08-15T05:59:18.696Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:43","lastModifiedDate":"2026-08-15 06:22:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74411","Ordinal":"1","Title":"wifi: rtw89: Correct data type for scan index to avoid infinite ","CVE":"CVE-2026-74411","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74411","Ordinal":"1","NoteData":"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  <0f> 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   <TASK>\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 < req->n_6ghz_params; i++) {\n   5fbc0:\t83 c3 01             \tadd    $0x1,%ebx --> i++\n   5fbc3:\t0f b6 c3             \tmovzbl %bl,%eax  --> get counter\n   fbc6:\t41 3b 44 24 74       \tcmp    0x74(%r12),%eax\n\n   * RBX: 00000000137466a1 -> %bl = a1 -> EAX = 000000a1 (161)","Type":"Description","Title":"wifi: rtw89: Correct data type for scan index to avoid infinite "}]}}}