CVE-2026-98823
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: preserve hidden-group beacon IE ownership A hidden-group probe-response entry borrows its beacon IEs from the group's beacon entry. cfg80211_update_assoc_bss_entry() can pass such an entry to cfg80211_update_known_bss() when merging scan entries after a channel switch. Copying the borrowed beacon_ies into the associated entry gives the same allocation two owners. Releasing the group's beacon entry can then leave the associated entry pointing to freed IEs, which are freed again when that entry is released. Skip beacon IE replacement when the source entry belongs to a hidden group. Preserve probe-response processing, the subsequent metadata updates, and the existing rejection path for conflicting hidden beacon updates.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-18 16:17:36.533000
Last modified
2026-10-30 13:21:29.160000
View original CVE JSON
{
"id": "CVE-2026-98823",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-18T16:17:36.533",
"lastModified": "2026-10-30T13:21:29.160",
"vulnStatus": "Received",
"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."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/wireless/scan.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "00f83d39675adc12d56957a1f5e316812157e4d3",
"versionType": "git",
"status": "affected"
},
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "3c44f780d1738e9ddf438729f5ff6ceb45f9ded3",
"versionType": "git",
"status": "affected"
},
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "8f79f429dc87a4f21e4fcf9a4d3df9484ca9a294",
"versionType": "git",
"status": "affected"
},
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "5617d5328839003c91007ce906b4f100b43926e9",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "49b66110a08e4f926f6393e938f226de2750a08b",
"versionType": "git",
"status": "affected"
},
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "dd7973a4130b0862be38d7e08cc0e874b3d99967",
"versionType": "git",
"status": "affected"
},
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "5f27581c176f84b52ec0ab9be7b500c10667ef60",
"versionType": "git",
"status": "affected"
},
{
"version": "0afd425b1b64251f19b5d8d8b49bf56fefbc643f",
"lessThan": "cc45f313d85533d647ce619326302aad6f797c14",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/wireless/scan.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.4",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.4",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.273",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.113",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.56",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.10",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"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",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}