{"id":"CVE-2026-89524","revision":"dbb9c57c6ba546ce87f6f80eff792c0f","records":[{"revision":"dbb9c57c6ba546ce87f6f80eff792c0f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89524","aliases":[],"title":"wifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets\n\nath6kl_cfg80211_connect_event() subtracts fixed IE offsets from\nassoc_req_len (-= 4) and assoc_resp_len (-= 6), both u8, with no lower\nbound. The aggregate check recently added to ath6kl_wmi_connect_event_rx()\nbounds the declared lengths from above (their sum must fit the received\nevent), but an assoc request/response shorter than its fixed offset still\nunderflows here: the u8 wraps to ~250, and cfg80211_connect_result() /\ncfg80211_roamed() then treat that wrapped value as the IE length and copy\nthat many bytes out of the small assoc_info buffer to user space via\nnl80211, disclosing adjacent slab memory.\n\nClamp both lengths to their offsets before subtracting.\n\nFound by 0sec (https://0sec.ai) using automated source analysis; the\nmissing lower bound is evident from source. Compile-tested.","state":0,"publishedAt":"2026-09-11T19:44:05.548+00:00","modifiedAt":"2026-10-19T08:48:15.538+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/ath/ath6kl/cfg80211.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"225587bdbf4b0eb5265a71ee4dc183561a1857fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"d337213a889705a69735079606d0b4c672b17605\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"e11d5ae96d5e52cb48fa27c6ad352d766d0322fb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"6deb4d7a0c3d91821b2a8d5239e3d9933d9217d9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"e3619bed5da125713b29ac881dc66f5e06606f88\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"e1330d719c047c4d8190a16be034b29fc601a815\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"8eb73016fb3968cf2db3987a92764563a3af773a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bdcd81707973cf8aa9305337166f8ee842a050d4\",\n                            \"lessThan\": \"3bbd05723d15dd06f0560bcd94fbf9a91b5f5613\",\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/ath/ath6kl/cfg80211.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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:N/A:H","score":8.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/225587bdbf4b0eb5265a71ee4dc183561a1857fc","https://git.kernel.org/stable/c/d337213a889705a69735079606d0b4c672b17605","https://git.kernel.org/stable/c/e11d5ae96d5e52cb48fa27c6ad352d766d0322fb","https://git.kernel.org/stable/c/6deb4d7a0c3d91821b2a8d5239e3d9933d9217d9","https://git.kernel.org/stable/c/e3619bed5da125713b29ac881dc66f5e06606f88","https://git.kernel.org/stable/c/e1330d719c047c4d8190a16be034b29fc601a815","https://git.kernel.org/stable/c/8eb73016fb3968cf2db3987a92764563a3af773a","https://git.kernel.org/stable/c/3bbd05723d15dd06f0560bcd94fbf9a91b5f5613"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89524","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89524","identifiers":["CVE-2026-89524"]},"retained":false,"historicalAffected":[]}],"coverage":[]}