CVE-2026-98422

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98422", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.348Z", "datePublished": "2026-10-14T13:27:50.789Z", "dateUpdated": "2026-10-19T09:19:15.873Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:19:15.873Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset the AP_VLAN tailroom counter on ifdown\n\nOn ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from\nthe AP interface, but it's never decremented again unless the AP is\nalso brought down. Thus, bringing the same AP_VLAN up again will\nincrement the counter again and eventually hit the sanity check:\n\n WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=\n master->crypto_tx_tailroom_needed_cnt);\n\nReset it on ifdown to avoid that."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/iface.c"], "versions": [{"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "b0b32d3f163d24ea7134380666193bf398e9dc0b", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "f6b34a7d64324faf28eedc0f8678b0f832f1cc36", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "304a874670a0b6ab5589a7f60b4af0251797b121", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "7775759e3cb35ef5a571b2d877c2a9b70a5d5f08", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "3d76b45e8432c0d75fcb9e90d92eaa3176898adf", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "4b54d01b48445b66c9e576de92b90a3a3ae7b34a", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "875835377d8d62c849b4eb03a7abfafa71d7668f", "status": "affected", "versionType": "git"}, {"version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "lessThan": "4504f3960dc4501c73be9f99eabda2e26e9db41e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/iface.c"], "versions": [{"version": "4.1", "status": "affected"}, {"version": "0", "lessThan": "4.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "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": "4.1", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b0b32d3f163d24ea7134380666193bf398e9dc0b"}, {"url": "https://git.kernel.org/stable/c/f6b34a7d64324faf28eedc0f8678b0f832f1cc36"}, {"url": "https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121"}, {"url": "https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08"}, {"url": "https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf"}, {"url": "https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a"}, {"url": "https://git.kernel.org/stable/c/875835377d8d62c849b4eb03a7abfafa71d7668f"}, {"url": "https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e"}], "title": "wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/mac80211/iface.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b0b32d3f163d24ea7134380666193bf398e9dc0b", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "f6b34a7d64324faf28eedc0f8678b0f832f1cc36", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "304a874670a0b6ab5589a7f60b4af0251797b121", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "7775759e3cb35ef5a571b2d877c2a9b70a5d5f08", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "3d76b45e8432c0d75fcb9e90d92eaa3176898adf", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "4b54d01b48445b66c9e576de92b90a3a3ae7b34a", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "875835377d8d62c849b4eb03a7abfafa71d7668f", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}, {"lessThan": "4504f3960dc4501c73be9f99eabda2e26e9db41e", "status": "affected", "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/mac80211/iface.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.1"}, {"lessThan": "4.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "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: reset the AP_VLAN tailroom counter on ifdown\n\nOn ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from\nthe AP interface, but it's never decremented again unless the AP is\nalso brought down. Thus, bringing the same AP_VLAN up again will\nincrement the counter again and eventually hit the sanity check:\n\n WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=\n master->crypto_tx_tailroom_needed_cnt);\n\nReset it on ifdown to avoid that."}], "id": "CVE-2026-98422", "lastModified": "2026-10-19T10:18:47.790", "metrics": {}, "published": "2026-10-14T14:17:53.737", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/875835377d8d62c849b4eb03a7abfafa71d7668f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b0b32d3f163d24ea7134380666193bf398e9dc0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f6b34a7d64324faf28eedc0f8678b0f832f1cc36"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown", "id": "2552230", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2552230"}, "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-617", "details": ["A flaw was found in the Linux kernel's mac80211 wireless subsystem. A local user with network administration privileges can cause a Denial of Service (DoS) by repeatedly activating and deactivating Access Point Virtual Local Area Network (AP_VLAN) interfaces. When an AP_VLAN interface is stopped, the kernel fails to reset an internal cryptographic buffer counter. Bringing the interface back up causes this counter to continuously increment, eventually triggering a kernel sanity check failure and potential system crash."], "name": "CVE-2026-98422", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "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-2026-98422\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98422\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98422.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,b0b32d3f163d24ea7134380666193bf398e9dc0b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,f6b34a7d64324faf28eedc0f8678b0f832f1cc36)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,304a874670a0b6ab5589a7f60b4af0251797b121)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,7775759e3cb35ef5a571b2d877c2a9b70a5d5f08)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,3d76b45e8432c0d75fcb9e90d92eaa3176898adf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,4b54d01b48445b66c9e576de92b90a3a3ae7b34a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,875835377d8d62c849b4eb03a7abfafa71d7668f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f9dca80b98caac8b4bfb43a2edf1e9f877ccf322,4504f3960dc4501c73be9f99eabda2e26e9db41e)"}}], "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": "4.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"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": "2026-10-15T05:45:14.854125+00:00", "updated": "2026-10-19T22:00:06.459854+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}