CVE-2026-98704

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98704", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.365Z", "datePublished": "2026-10-18T15:46:34.493Z", "dateUpdated": "2026-10-30T12:38:54.905Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:38:54.905Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: keep fallback association elements alive\n\nAssociating to a non-transmitted MBSSID profile reads freed memory while\ndetermining the operating channel and applying HT capabilities.\n\nWhen an association response omits WMM, HT, or VHT information,\nieee80211_assoc_config_link() parses the cached BSS IEs and copies the\nmissing element pointers out of that fallback parse. For a\nnon-transmitted MBSSID profile those pointers refer to merged-profile\nstorage owned by the parse object, and the fallback block frees that\nobject at its end. The copied pointers are used afterwards to determine\nthe operating channel, configure bandwidth, and apply HT capabilities.\n\nKeep the fallback parse result alive until association setup finishes.\n\n[reorder variable declaration]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/mlme.c"], "versions": [{"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "409da4ad76d921b173ebb801e316023f74564239", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "fb47973eecd869ab5662bb39002f6680536caa6c", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "64183344f6f29ed0cad33d6ec0e769aa5e31fb19", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "de77b0f68142147e74fac1c497dbe1f93daeeed9", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "1d9644753d46c86b4e5c05bd6d9d35339ea27331", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "d0183cd1f6a2dba9e63be20af2f65093c9c8d121", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "0878594c5806dd29fa5e16cc026ce19158afdad2", "status": "affected", "versionType": "git"}, {"version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "lessThan": "a10a2f80476d166fd81c361ec0319493671b694e", "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/mlme.c"], "versions": [{"version": "5.2", "status": "affected"}, {"version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "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": "5.2", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/409da4ad76d921b173ebb801e316023f74564239"}, {"url": "https://git.kernel.org/stable/c/fb47973eecd869ab5662bb39002f6680536caa6c"}, {"url": "https://git.kernel.org/stable/c/64183344f6f29ed0cad33d6ec0e769aa5e31fb19"}, {"url": "https://git.kernel.org/stable/c/de77b0f68142147e74fac1c497dbe1f93daeeed9"}, {"url": "https://git.kernel.org/stable/c/1d9644753d46c86b4e5c05bd6d9d35339ea27331"}, {"url": "https://git.kernel.org/stable/c/d0183cd1f6a2dba9e63be20af2f65093c9c8d121"}, {"url": "https://git.kernel.org/stable/c/0878594c5806dd29fa5e16cc026ce19158afdad2"}, {"url": "https://git.kernel.org/stable/c/a10a2f80476d166fd81c361ec0319493671b694e"}], "title": "wifi: mac80211: keep fallback association elements alive", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/mac80211/mlme.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "409da4ad76d921b173ebb801e316023f74564239", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "fb47973eecd869ab5662bb39002f6680536caa6c", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "64183344f6f29ed0cad33d6ec0e769aa5e31fb19", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "de77b0f68142147e74fac1c497dbe1f93daeeed9", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "1d9644753d46c86b4e5c05bd6d9d35339ea27331", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "d0183cd1f6a2dba9e63be20af2f65093c9c8d121", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "0878594c5806dd29fa5e16cc026ce19158afdad2", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}, {"lessThan": "a10a2f80476d166fd81c361ec0319493671b694e", "status": "affected", "version": "5023b14cf4df4d22e1a80738167f3438c9e62e5f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/mac80211/mlme.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.2"}, {"lessThan": "5.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "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: keep fallback association elements alive\n\nAssociating to a non-transmitted MBSSID profile reads freed memory while\ndetermining the operating channel and applying HT capabilities.\n\nWhen an association response omits WMM, HT, or VHT information,\nieee80211_assoc_config_link() parses the cached BSS IEs and copies the\nmissing element pointers out of that fallback parse. For a\nnon-transmitted MBSSID profile those pointers refer to merged-profile\nstorage owned by the parse object, and the fallback block frees that\nobject at its end. The copied pointers are used afterwards to determine\nthe operating channel, configure bandwidth, and apply HT capabilities.\n\nKeep the fallback parse result alive until association setup finishes.\n\n[reorder variable declaration]"}], "id": "CVE-2026-98704", "lastModified": "2026-10-30T13:21:19.600", "metrics": {}, "published": "2026-10-18T16:17:23.913", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0878594c5806dd29fa5e16cc026ce19158afdad2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1d9644753d46c86b4e5c05bd6d9d35339ea27331"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/409da4ad76d921b173ebb801e316023f74564239"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/64183344f6f29ed0cad33d6ec0e769aa5e31fb19"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a10a2f80476d166fd81c361ec0319493671b694e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d0183cd1f6a2dba9e63be20af2f65093c9c8d121"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de77b0f68142147e74fac1c497dbe1f93daeeed9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fb47973eecd869ab5662bb39002f6680536caa6c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mac80211: keep fallback association elements alive", "id": "2555194", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555194"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's mac80211 wireless subsystem. When associating with a wireless network profile that omits certain configuration parameters, the system prematurely frees internal data structures and subsequently reads the freed memory during connection setup. A malicious access point or an attacker within wireless range can exploit this use-after-free condition to cause a Denial of Service (DoS) through a kernel crash or potentially expose sensitive kernel memory."], "name": "CVE-2026-98704", "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": "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": "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": "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": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98704\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98704\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98704.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5023b14cf4df4d22e1a80738167f3438c9e62e5f,1d9644753d46c86b4e5c05bd6d9d35339ea27331)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5023b14cf4df4d22e1a80738167f3438c9e62e5f,d0183cd1f6a2dba9e63be20af2f65093c9c8d121)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5023b14cf4df4d22e1a80738167f3438c9e62e5f,0878594c5806dd29fa5e16cc026ce19158afdad2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5023b14cf4df4d22e1a80738167f3438c9e62e5f,a10a2f80476d166fd81c361ec0319493671b694e)"}}], "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": "5.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "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": "2026-10-18T22:15:14.439100+00:00", "updated": "2026-10-23T06:45:07.458559+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}