CVE-2026-74411 - Vulnerability Details

Vendors	Products
Linux Subscribe	Linux Kernel Subscribe

Link	Providers
https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4
https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68
https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5
https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f
https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: Correct data type for scan index to avoid infinite loop A kernel soft lockup was observed during Wi-Fi scanning on the 6GHz band. The CPU becomes stuck in rtw89_hw_scan_add_chan_ax for over 20 seconds, leading to a system panic. RIP points to 0f b6 c3 (movzbl %bl, %eax), which zero-extends the low 8 bits of RBX into RAX. RBX (the counter i) has reached a huge value: 0x137466a1. watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [kworker/u16:4:6124] Workqueue: events_unbound cfg80211_wiphy_work [cfg80211] RIP: 0010:rtw89_hw_scan_add_chan_ax+0xb3/0x6e0 [rtw89_core] Code: a0 48 89 45 a8 44 89 6d 9c 44 89 75 98 eb 29 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 c3 01 <0f> b6 c3 41 3b 44 24 74 0f 83 0b 02 00 00 0f b6 c3 48 8d 14 80 49 RSP: 0018:ffffcb48cbaa39f8 EFLAGS: 00000202 RAX: 0000000000000005 RBX: 00000000137466a1 RCX: 0000000000000000 RDX: ffff89ffc9d851a8 RSI: 0000000000004f0d RDI: 0000000096af0130 RBP: ffffcb48cbaa3a60 R08: 0000000000000000 R09: ffff8a00b7502080 R10: ffff8a00b75ff600 R11: 0000000000000000 R12: ffff89ffc7553870 R13: ffff8a00b7ac8f19 R14: ffff8a00b75020d8 R15: ffff89ffc3d54d80 FS: 0000000000000000(0000) GS:ffff8a014f962000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007558d7f9f4c4 CR3: 0000000178040001 CR4: 00000000001706f0 Call Trace: <TASK> rtw89_hw_scan_prep_chan_list_ax+0x8a/0x400 [rtw89_core] rtw89_hw_scan_start+0x546/0x8a0 [rtw89_core] ? rtw89_fw_h2c_default_cmac_tbl+0x13c/0x1f0 [rtw89_core] rtw89_ops_hw_scan+0xae/0x120 [rtw89_core] drv_hw_scan+0xbb/0x180 [mac80211] __ieee80211_start_scan+0x2fc/0x750 [mac80211] ieee80211_request_scan+0xe/0x20 [mac80211] ieee80211_scan+0x123/0x190 [mac80211] rdev_scan+0x40/0x110 [cfg80211] cfg80211_scan_6ghz+0x5a1/0xa30 [cfg80211] By objdump with source: for (i = 0; i < req->n_6ghz_params; i++) { 5fbc0: 83 c3 01 add $0x1,%ebx --> i++ 5fbc3: 0f b6 c3 movzbl %bl,%eax --> get counter fbc6: 41 3b 44 24 74 cmp 0x74(%r12),%eax * RBX: 00000000137466a1 -> %bl = a1 -> EAX = 000000a1 (161)
Title		wifi: rtw89: Correct data type for scan index to avoid infinite loop
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4 https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68 https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5 https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74411", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.892Z", "datePublished": "2026-08-15T05:59:18.696Z", "dateUpdated": "2026-08-15T05:59:18.696Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:59:18.696Z"}, "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)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/realtek/rtw89/fw.c"], "versions": [{"version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0", "lessThan": "966fbed4b4463fbcb49c5becf3f86eae776861bd", "status": "affected", "versionType": "git"}, {"version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0", "lessThan": "05d46e30303275f21f13c951166d39c85df976d4", "status": "affected", "versionType": "git"}, {"version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0", "lessThan": "7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f", "status": "affected", "versionType": "git"}, {"version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0", "lessThan": "140fa699cfd0e18ab2f1497acd951fb3548610f5", "status": "affected", "versionType": "git"}, {"version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0", "lessThan": "08fdcb529df6df3562dd2b0035f88dd5be8b3c68", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/realtek/rtw89/fw.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.2-rc1"}]}]}], "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"}}}}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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)"}], "id": "CVE-2026-74411", "lastModified": "2026-08-15T06:22:43.197", "metrics": {}, "published": "2026-08-15T06:22:43.197", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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