{"id":"CVE-2026-74409","revision":"a628e1f32fbc46b19e85169c76d0a9f4","records":[{"revision":"a628e1f32fbc46b19e85169c76d0a9f4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74409","aliases":[],"title":"wifi: rtw89: add bounds check on firmware mac_id in link lookup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: add bounds check on firmware mac_id in link lookup\n\nThe mac_id field in RX descriptors is 8 bits wide (0-255), but\nassoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries.\nWhile the driver currently assigns mac_id values below 128, the\ndescriptor value comes from firmware and is not validated before use\nas an array index. Add a defensive bounds check in\nrtw89_assoc_link_rcu_dereference() to guard against out-of-range\nfirmware values.","state":0,"publishedAt":"2026-08-15T05:59:17.361+00:00","modifiedAt":"2026-10-16T19:05:43.801+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/realtek/rtw89/core.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"144c6cd24b3556e6e7a14271cee57a42ebf97450\",\n                            \"lessThan\": \"ad445de67359f24088d4305c05fbd7e34c4e35e3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"144c6cd24b3556e6e7a14271cee57a42ebf97450\",\n                            \"lessThan\": \"920101305e7601a33b9e01019f4ca526af2526ae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"144c6cd24b3556e6e7a14271cee57a42ebf97450\",\n                            \"lessThan\": \"6d88244bb129755acca696f9227200f4a2d106a6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/realtek/rtw89/core.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/ad445de67359f24088d4305c05fbd7e34c4e35e3","https://git.kernel.org/stable/c/920101305e7601a33b9e01019f4ca526af2526ae","https://git.kernel.org/stable/c/6d88244bb129755acca696f9227200f4a2d106a6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74409","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74409","identifiers":["CVE-2026-74409"]},"retained":false,"historicalAffected":[]}],"coverage":[]}