CVE-2026-98423

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98423", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.348Z", "datePublished": "2026-10-14T13:27:51.391Z", "dateUpdated": "2026-10-19T09:19:16.854Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:19:16.854Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/virtual/mac80211_hwsim_main.c"], "versions": [{"version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "lessThan": "5ce9b2bc9e73213e316a8c72400256a76bf41814", "status": "affected", "versionType": "git"}, {"version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "lessThan": "c4e4fe330294e3936e0f4e15d6996468f8a45fb2", "status": "affected", "versionType": "git"}, {"version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "lessThan": "2f59be7585dc81baa6f36b0035dd6848ea43d318", "status": "affected", "versionType": "git"}, {"version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "lessThan": "5c79ef616aa16af582fb2cb93b0f750975a0004f", "status": "affected", "versionType": "git"}, {"version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "lessThan": "d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb", "status": "affected", "versionType": "git"}, {"version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "lessThan": "87840d4a3a21b1c19b867a80e16ba69dff284de2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/virtual/mac80211_hwsim_main.c"], "versions": [{"version": "3.1", "status": "affected"}, {"version": "0", "lessThan": "3.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5ce9b2bc9e73213e316a8c72400256a76bf41814"}, {"url": "https://git.kernel.org/stable/c/c4e4fe330294e3936e0f4e15d6996468f8a45fb2"}, {"url": "https://git.kernel.org/stable/c/2f59be7585dc81baa6f36b0035dd6848ea43d318"}, {"url": "https://git.kernel.org/stable/c/5c79ef616aa16af582fb2cb93b0f750975a0004f"}, {"url": "https://git.kernel.org/stable/c/d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb"}, {"url": "https://git.kernel.org/stable/c/87840d4a3a21b1c19b867a80e16ba69dff284de2"}], "title": "wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/virtual/mac80211_hwsim_main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5ce9b2bc9e73213e316a8c72400256a76bf41814", "status": "affected", "version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "versionType": "git"}, {"lessThan": "c4e4fe330294e3936e0f4e15d6996468f8a45fb2", "status": "affected", "version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "versionType": "git"}, {"lessThan": "2f59be7585dc81baa6f36b0035dd6848ea43d318", "status": "affected", "version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "versionType": "git"}, {"lessThan": "5c79ef616aa16af582fb2cb93b0f750975a0004f", "status": "affected", "version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "versionType": "git"}, {"lessThan": "d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb", "status": "affected", "version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "versionType": "git"}, {"lessThan": "87840d4a3a21b1c19b867a80e16ba69dff284de2", "status": "affected", "version": "7882513bacb176ab4aacceefdd035ca9479da4fb", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/virtual/mac80211_hwsim_main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.1"}, {"lessThan": "3.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-98423", "lastModified": "2026-10-19T10:18:47.930", "metrics": {}, "published": "2026-10-14T14:17:53.880", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2f59be7585dc81baa6f36b0035dd6848ea43d318"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c79ef616aa16af582fb2cb93b0f750975a0004f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ce9b2bc9e73213e316a8c72400256a76bf41814"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/87840d4a3a21b1c19b867a80e16ba69dff284de2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c4e4fe330294e3936e0f4e15d6996468f8a45fb2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping", "id": "2552198", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2552198"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-367", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: mac80211_hwsim: don't hand frames to mac80211 while stopping\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).\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.\nDrop the error print that would've complicated the error path, it\nonly triggers for allocation failures (already noisy) and malformed\nframes anyway.", "A flaw was found in the Linux kernel's mac80211_hwsim virtual wireless driver. A local attacker can cause a denial of service (DoS) by triggering a race condition between simulated radio shutdown and incoming network frame delivery from user space. Stopping the radio while frames are being processed triggers an unexpected kernel warning, which can lead to system instability or a kernel crash if the system is configured to halt on warnings."], "name": "CVE-2026-98423", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98423\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98423\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98423.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7882513bacb176ab4aacceefdd035ca9479da4fb,5ce9b2bc9e73213e316a8c72400256a76bf41814)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7882513bacb176ab4aacceefdd035ca9479da4fb,c4e4fe330294e3936e0f4e15d6996468f8a45fb2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7882513bacb176ab4aacceefdd035ca9479da4fb,2f59be7585dc81baa6f36b0035dd6848ea43d318)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7882513bacb176ab4aacceefdd035ca9479da4fb,5c79ef616aa16af582fb2cb93b0f750975a0004f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7882513bacb176ab4aacceefdd035ca9479da4fb,d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7882513bacb176ab4aacceefdd035ca9479da4fb,87840d4a3a21b1c19b867a80e16ba69dff284de2)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-15T04:45:13.066698+00:00", "updated": "2026-10-19T19:30:02.795377+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}