{"id":"CVE-2026-23336","revision":null,"records":[{"revision":"7343658bcc024d04b8bddd0b14a3d675","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23336","aliases":[],"title":"wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel rfkill_block work in wiphy_unregister()\n\nThere is a use-after-free error in cfg80211_shutdown_all_interfaces found\nby syzkaller:\n\nBUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220\nRead of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326\nCPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nWorkqueue: events cfg80211_rfkill_block_work\nCall Trace:\n \n dump_stack_lvl+0x116/0x1f0\n print_report+0xcd/0x630\n kasan_report+0xe0/0x110\n cfg80211_shutdown_all_interfaces+0x213/0x220\n cfg80211_rfkill_block_work+0x1e/0x30\n process_one_work+0x9cf/0x1b70\n worker_thread+0x6c8/0xf10\n kthread+0x3c5/0x780\n ret_from_fork+0x56d/0x700\n ret_from_fork_asm+0x1a/0x30\n \n\nThe problem arises due to the rfkill_block work is not cancelled when wiphy\nis being unregistered. In order to fix the issue cancel the corresponding\nwork in wiphy_unregister().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","state":0,"publishedAt":"2026-03-25T10:27:26.061+00:00","modifiedAt":"2026-10-19T18:35:41.752+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/wireless/core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"82a35356b5c1f75fe6a8a561db44e8d0e49da8f9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"b2e9626a9d16b9bbbd06498c9e73c93be354dc7a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"eeea8da43ab86ac0a6b9cec225eec91564346940\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"fa18639deab4a3662d543200c5bfc29bf4e23173\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"57e39fe8da573435fa35975f414f4dc17d9f8449\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"584279ad9ff1e8e7c5494b9fce286201f7d1f9e2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3\",\n \"lessThan\": \"767d23ade706d5fa51c36168e92a9c5533c351a1\",\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/wireless/core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.31\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.31\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.253\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.203\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.167\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.130\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.77\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.17\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19.7\",\n \"lessThanOrEqual\": \"6.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9","https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a","https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940","https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173","https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449","https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2","https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5","https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23336","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23336","identifiers":["CVE-2026-23336"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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