{"id":"CVE-2026-98423","revision":"fc8e3d16a1054b7cbefc517ae805f199","records":[{"revision":"fc8e3d16a1054b7cbefc517ae805f199","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98423","aliases":[],"title":"wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: don't hand frames to mac80211 while stopping\n\nThe code checks ->started for frames coming from wmediumd, but the\nradio can be stopped after the check and before frame delivery,\ncausing mac80211 to hit the WARN_ON(!local->started).\n\nExpand the mutex for this case and synchronise against it when the\nradio is stopped to avoid being able to hit the warning with hwsim.\n\nDrop the error print that would've complicated the error path, it\nonly triggers for allocation failures (already noisy) and malformed\nframes anyway.","state":0,"publishedAt":"2026-10-14T13:27:51.391+00:00","modifiedAt":"2026-10-19T09:19:16.854+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/virtual/mac80211_hwsim_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7882513bacb176ab4aacceefdd035ca9479da4fb\",\n                            \"lessThan\": \"5ce9b2bc9e73213e316a8c72400256a76bf41814\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7882513bacb176ab4aacceefdd035ca9479da4fb\",\n                            \"lessThan\": \"c4e4fe330294e3936e0f4e15d6996468f8a45fb2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7882513bacb176ab4aacceefdd035ca9479da4fb\",\n                            \"lessThan\": \"2f59be7585dc81baa6f36b0035dd6848ea43d318\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7882513bacb176ab4aacceefdd035ca9479da4fb\",\n                            \"lessThan\": \"5c79ef616aa16af582fb2cb93b0f750975a0004f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7882513bacb176ab4aacceefdd035ca9479da4fb\",\n                            \"lessThan\": \"d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7882513bacb176ab4aacceefdd035ca9479da4fb\",\n                            \"lessThan\": \"87840d4a3a21b1c19b867a80e16ba69dff284de2\",\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/virtual/mac80211_hwsim_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\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/5ce9b2bc9e73213e316a8c72400256a76bf41814","https://git.kernel.org/stable/c/c4e4fe330294e3936e0f4e15d6996468f8a45fb2","https://git.kernel.org/stable/c/2f59be7585dc81baa6f36b0035dd6848ea43d318","https://git.kernel.org/stable/c/5c79ef616aa16af582fb2cb93b0f750975a0004f","https://git.kernel.org/stable/c/d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb","https://git.kernel.org/stable/c/87840d4a3a21b1c19b867a80e16ba69dff284de2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98423","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98423","identifiers":["CVE-2026-98423"]},"retained":false,"historicalAffected":[]}],"coverage":[]}