CVE-2026-98823

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98823", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.372Z", "datePublished": "2026-10-18T15:49:15.473Z", "dateUpdated": "2026-10-30T12:40:00.224Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:40:00.224Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: preserve hidden-group beacon IE ownership\n\nA hidden-group probe-response entry borrows its beacon IEs from the\ngroup's beacon entry. cfg80211_update_assoc_bss_entry() can pass such\nan entry to cfg80211_update_known_bss() when merging scan entries\nafter a channel switch.\n\nCopying the borrowed beacon_ies into the associated entry gives the\nsame allocation two owners. Releasing the group's beacon entry can\nthen leave the associated entry pointing to freed IEs, which are\nfreed again when that entry is released.\n\nSkip beacon IE replacement when the source entry belongs to a hidden\ngroup. Preserve probe-response processing, the subsequent metadata\nupdates, and the existing rejection path for conflicting hidden\nbeacon updates."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/wireless/scan.c"], "versions": [{"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "00f83d39675adc12d56957a1f5e316812157e4d3", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "3c44f780d1738e9ddf438729f5ff6ceb45f9ded3", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "8f79f429dc87a4f21e4fcf9a4d3df9484ca9a294", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "5617d5328839003c91007ce906b4f100b43926e9", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "49b66110a08e4f926f6393e938f226de2750a08b", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "dd7973a4130b0862be38d7e08cc0e874b3d99967", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "5f27581c176f84b52ec0ab9be7b500c10667ef60", "status": "affected", "versionType": "git"}, {"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "lessThan": "cc45f313d85533d647ce619326302aad6f797c14", "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/wireless/scan.c"], "versions": [{"version": "5.4", "status": "affected"}, {"version": "0", "lessThan": "5.4", "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": "5.4", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/00f83d39675adc12d56957a1f5e316812157e4d3"}, {"url": "https://git.kernel.org/stable/c/3c44f780d1738e9ddf438729f5ff6ceb45f9ded3"}, {"url": "https://git.kernel.org/stable/c/8f79f429dc87a4f21e4fcf9a4d3df9484ca9a294"}, {"url": "https://git.kernel.org/stable/c/5617d5328839003c91007ce906b4f100b43926e9"}, {"url": "https://git.kernel.org/stable/c/49b66110a08e4f926f6393e938f226de2750a08b"}, {"url": "https://git.kernel.org/stable/c/dd7973a4130b0862be38d7e08cc0e874b3d99967"}, {"url": "https://git.kernel.org/stable/c/5f27581c176f84b52ec0ab9be7b500c10667ef60"}, {"url": "https://git.kernel.org/stable/c/cc45f313d85533d647ce619326302aad6f797c14"}], "title": "wifi: cfg80211: preserve hidden-group beacon IE ownership", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/wireless/scan.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "00f83d39675adc12d56957a1f5e316812157e4d3", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "3c44f780d1738e9ddf438729f5ff6ceb45f9ded3", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "8f79f429dc87a4f21e4fcf9a4d3df9484ca9a294", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "5617d5328839003c91007ce906b4f100b43926e9", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "49b66110a08e4f926f6393e938f226de2750a08b", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "dd7973a4130b0862be38d7e08cc0e874b3d99967", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "5f27581c176f84b52ec0ab9be7b500c10667ef60", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}, {"lessThan": "cc45f313d85533d647ce619326302aad6f797c14", "status": "affected", "version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/wireless/scan.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.4"}, {"lessThan": "5.4", "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: cfg80211: preserve hidden-group beacon IE ownership\n\nA hidden-group probe-response entry borrows its beacon IEs from the\ngroup's beacon entry. cfg80211_update_assoc_bss_entry() can pass such\nan entry to cfg80211_update_known_bss() when merging scan entries\nafter a channel switch.\n\nCopying the borrowed beacon_ies into the associated entry gives the\nsame allocation two owners. Releasing the group's beacon entry can\nthen leave the associated entry pointing to freed IEs, which are\nfreed again when that entry is released.\n\nSkip beacon IE replacement when the source entry belongs to a hidden\ngroup. Preserve probe-response processing, the subsequent metadata\nupdates, and the existing rejection path for conflicting hidden\nbeacon updates."}], "id": "CVE-2026-98823", "lastModified": "2026-10-30T13:21:29.160", "metrics": {}, "published": "2026-10-18T16:17:36.533", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00f83d39675adc12d56957a1f5e316812157e4d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3c44f780d1738e9ddf438729f5ff6ceb45f9ded3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49b66110a08e4f926f6393e938f226de2750a08b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5617d5328839003c91007ce906b4f100b43926e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5f27581c176f84b52ec0ab9be7b500c10667ef60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f79f429dc87a4f21e4fcf9a4d3df9484ca9a294"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cc45f313d85533d647ce619326302aad6f797c14"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dd7973a4130b0862be38d7e08cc0e874b3d99967"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: cfg80211: preserve hidden-group beacon IE ownership", "id": "2555230", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555230"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1341", "details": ["A flaw was found in the Linux kernel's cfg80211 wireless subsystem. This issue allows an adjacent attacker within wireless range to cause a Denial of Service (DoS) by crashing the system. During a channel switch, the kernel improperly manages memory ownership when merging wireless scan entries that borrow beacon information elements (IEs). Releasing these entries can result in a double-free condition, leading to kernel memory corruption."], "name": "CVE-2026-98823", "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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98823\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98823\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98823.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0afd425b1b64251f19b5d8d8b49bf56fefbc643f,49b66110a08e4f926f6393e938f226de2750a08b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0afd425b1b64251f19b5d8d8b49bf56fefbc643f,dd7973a4130b0862be38d7e08cc0e874b3d99967)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0afd425b1b64251f19b5d8d8b49bf56fefbc643f,5f27581c176f84b52ec0ab9be7b500c10667ef60)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0afd425b1b64251f19b5d8d8b49bf56fefbc643f,cc45f313d85533d647ce619326302aad6f797c14)"}}], "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": "5.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.4)"}}, {"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": "[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": "2026-10-18T20:30:17.102331+00:00", "updated": "2026-10-24T04:30:08.034085+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-1341"]}