HighFix available
wifi: cfg80211: fix use-after-free in cmp_bss()
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f ("cfg80211: track hidden SSID networks properly"), adjust cfg80211_update_known_bss() to free the last beacon frame elements only if they're not shared via the corresponding 'hidden_beacon_bss' pointer.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.243, 5.15.192, 5.4.299, 6.1.151, 6.12.46, 6.16.6, 6.6.105
- CVEs
- CVE-2025-39864
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:45 UTC · Revision 1
Source evidence
wifi: cfg80211: fix use-after-free in cmp_bss()
core-osv · Original sourcePublished 19 Sept 2025, 15:26 UTC
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f ("cfg80211: track hidden SSID networks properly"), adjust cfg80211_update_known_bss() to free the last beacon frame elements only if they're not shared via the corresponding 'hidden_beacon_bss' pointer.
osv:CVE-2025-39864
Kernel
Fixed versions: 5.4.299, 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6
Complete source record
{
"id": "5b9f7026568b3d423c6f1697daae319affb1cb8f7b0629627c3438d6383c555b",
"url": "https://osv.dev/vulnerability/CVE-2025-39864",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "wifi: cfg80211: fix use-after-free in cmp_bss()",
"summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f (\"cfg80211: track hidden SSID networks properly\"), adjust cfg80211_update_known_bss() to free the last beacon frame elements only if they're not shared via the corresponding 'hidden_beacon_bss' pointer.",
"evidence": "osv:CVE-2025-39864",
"products": [
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"fixed_versions": [
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"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
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{
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{
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{
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{
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{
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"aliases": [
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"metrics": [
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}
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"affected": [
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"type": "GIT",
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{
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{
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{
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{
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{
"type": "ECOSYSTEM",
"events": [
{
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{
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]
},
{
"type": "ECOSYSTEM",
"events": [
{
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{
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39864.json"
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],
"modified": "2026-10-28T02:30:38.100699469Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-032379.html",
"https://cert-portal.siemens.com/productcert/html/ssa-089022.html",
"https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08",
"https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef",
"https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d",
"https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716",
"https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807",
"https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c",
"https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d",
"https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853",
"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html",
"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39864.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-39864",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39864.json"
}
},
"related_cves": [
{
"value": "CVE-2025-39864",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 505451,
"published_at": "2025-09-19T15:26:33.787+00:00"
}