{"id":"CVE-2026-90344","revision":"1bc57cb63dd64a499dab09b278bdeb26","records":[{"revision":"1bc57cb63dd64a499dab09b278bdeb26","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90344","aliases":[],"title":"wifi: mac80211: disconnect on CSA to channel 0","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: disconnect on CSA to channel 0\n\nThe refactor for the CSA parsing erroneously equates channel\nzero and no information present, leading it to ignore a CSA\non an AP that advertises a switch to that (invalid) channel.\nThis leads to not disconnecting, which we should. For Intel\ndevices, this can lead to a firmware crash.\n\nFix this by using an int type for the channel number as well\nas the opclass, and using a (negative) value that cannot be\nencoded in the element to indicate it's not present.","state":0,"publishedAt":"2026-09-17T16:08:54.311+00:00","modifiedAt":"2026-10-19T09:02:01.149+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                        \"net/mac80211/spectmgmt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"21c3f8f95554feff9bed15703e89adbe582e0383\",\n                            \"lessThan\": \"099aadb2012d7490bc584cc5075ef11cbc33f2c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"21c3f8f95554feff9bed15703e89adbe582e0383\",\n                            \"lessThan\": \"e7bc5ab93acd1c3f54feeb9fa19ead3530168090\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"21c3f8f95554feff9bed15703e89adbe582e0383\",\n                            \"lessThan\": \"eef374088450bb91626e133c7172b8a0e969a522\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"21c3f8f95554feff9bed15703e89adbe582e0383\",\n                            \"lessThan\": \"cf57f0a674cc3e3cda1a789359cc1238b61b9d7d\",\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                        \"net/mac80211/spectmgmt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\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":[],"references":["https://git.kernel.org/stable/c/099aadb2012d7490bc584cc5075ef11cbc33f2c3","https://git.kernel.org/stable/c/e7bc5ab93acd1c3f54feeb9fa19ead3530168090","https://git.kernel.org/stable/c/eef374088450bb91626e133c7172b8a0e969a522","https://git.kernel.org/stable/c/cf57f0a674cc3e3cda1a789359cc1238b61b9d7d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90344","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90344","identifiers":["CVE-2026-90344"]},"retained":false,"historicalAffected":[]}],"coverage":[]}