Search/CVE-2025-39864
● CVE — High

CVE-2025-39864

Vendordebian, linuxProductdebian linux, linux kernelDiscoveredSep 19, 2025UpdatedJul 30, 2026

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.

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CVSS v3.1
8.8 HIGH
EPSS
0.24%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
19
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 22, 2026
▲ 0.02pp
0.21% → 0.24% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorADJACENT
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Connections
22 relationships
Timeline
disclosure → media coverage
Sep 19, 2025
Disclosure — published as a CVE record. · last revised by NVD Jul 30, 2026
Dec 4, 2025
ubuntu.com reports: USN-7909-1: Linux kernel vulnerabilities
Dec 4, 2025
ubuntu.com reports: USN-7909-2: Linux kernel (Real-time) vulnerabilities
Dec 4, 2025
ubuntu.com reports: USN-7909-3: Linux kernel (FIPS) vulnerabilities
Dec 4, 2025
ubuntu.com reports: USN-7910-1: Linux kernel (Azure FIPS) vulnerabilities
Dec 5, 2025
ubuntu.com reports: USN-7909-4: Linux kernel vulnerabilities
Dec 5, 2025
ubuntu.com reports: USN-7910-2: Linux kernel (Azure) vulnerabilities
Dec 15, 2025
ubuntu.com reports: USN-7933-1: Linux kernel (KVM) vulnerabilities
Dec 15, 2025
ubuntu.com reports: USN-7909-5: Linux kernel (Raspberry Pi) vulnerabilities
Dec 16, 2025
ubuntu.com reports: USN-7938-1: Linux kernel (Azure) vulnerabilities
Mar 16, 2026
ubuntu.com reports: USN-8095-1: Linux kernel vulnerabilities
Mar 16, 2026
ubuntu.com reports: USN-8095-2: Linux kernel (FIPS) vulnerabilities
Mar 17, 2026
ubuntu.com reports: USN-8095-3: Linux kernel (Real-time) vulnerabilities
Mar 23, 2026
ubuntu.com reports: USN-8095-4: Linux kernel (AWS) vulnerabilities
Mar 25, 2026
ubuntu.com reports: USN-8125-1: Linux kernel (Azure) vulnerabilities
Mar 25, 2026
ubuntu.com reports: USN-8126-1: Linux kernel (Azure) vulnerabilities
Apr 1, 2026
ubuntu.com reports: USN-8095-5: Linux kernel (Raspberry Pi) vulnerabilities
Apr 9, 2026
ubuntu.com reports: USN-8165-1: Linux kernel (Azure FIPS) vulnerabilities
May 7, 2026
ubuntu.com reports: USN-8261-1: Linux kernel (Xilinx) vulnerabilities
Oct 7, 2026
ubuntu.com reports: LSN-0122-1: Kernel Live Patch Security Notice