{"api_version":"1","generated_at":"2026-04-19T01:16:19+00:00","cve":"CVE-2026-23336","urls":{"html":"https://cve.report/CVE-2026-23336","api":"https://cve.report/api/cve/CVE-2026-23336.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23336","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23336"},"summary":{"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 <TASK>\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 </TASK>\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":"PUBLISHED","assigner":"Linux","published_at":"2026-03-25 11:16:31","updated_at":"2026-04-18 09:16:19"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173","name":"https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a","name":"https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5","name":"https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940","name":"https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2","name":"https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449","name":"https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1","name":"https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9","name":"https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23336","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23336","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 82a35356b5c1f75fe6a8a561db44e8d0e49da8f9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 b2e9626a9d16b9bbbd06498c9e73c93be354dc7a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 eeea8da43ab86ac0a6b9cec225eec91564346940 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 fa18639deab4a3662d543200c5bfc29bf4e23173 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 57e39fe8da573435fa35975f414f4dc17d9f8449 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 584279ad9ff1e8e7c5494b9fce286201f7d1f9e2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 767d23ade706d5fa51c36168e92a9c5533c351a1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.31","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.31 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.253 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.77 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.17 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.7 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"23336","cve":"CVE-2026-23336","epss":"0.000130000","percentile":"0.023010000","score_date":"2026-04-18","updated_at":"2026-04-19 00:10:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/wireless/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"82a35356b5c1f75fe6a8a561db44e8d0e49da8f9","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"b2e9626a9d16b9bbbd06498c9e73c93be354dc7a","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"eeea8da43ab86ac0a6b9cec225eec91564346940","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"fa18639deab4a3662d543200c5bfc29bf4e23173","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"57e39fe8da573435fa35975f414f4dc17d9f8449","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"584279ad9ff1e8e7c5494b9fce286201f7d1f9e2","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"},{"lessThan":"767d23ade706d5fa51c36168e92a9c5533c351a1","status":"affected","version":"1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/wireless/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.31"},{"lessThan":"2.6.31","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.77","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.17","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.77","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.17","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.7","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"2.6.31","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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 <TASK>\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 </TASK>\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."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-04-18T08:58:01.292Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9"},{"url":"https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a"},{"url":"https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940"},{"url":"https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173"},{"url":"https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449"},{"url":"https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2"},{"url":"https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5"},{"url":"https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1"}],"title":"wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23336","datePublished":"2026-03-25T10:27:26.061Z","dateReserved":"2026-01-13T15:37:45.997Z","dateUpdated":"2026-04-18T08:58:01.292Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-25 11:16:31","lastModifiedDate":"2026-04-18 09:16:19","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23336","Ordinal":"1","Title":"wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()","CVE":"CVE-2026-23336","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23336","Ordinal":"1","NoteData":"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 <TASK>\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 </TASK>\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.","Type":"Description","Title":"wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()"}]}}}