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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 cve-icon cve-icon
https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef cve-icon cve-icon
https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d cve-icon cve-icon
https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716 cve-icon cve-icon
https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807 cve-icon cve-icon
https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c cve-icon cve-icon
https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d cve-icon cve-icon
https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html cve-icon
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html cve-icon
https://lore.kernel.org/linux-cve-announce/2025091906-CVE-2025-39864-a3a2@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-39864 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-39864 cve-icon
History

Mon, 03 Nov 2025 18:30:00 +0000

Type Values Removed Values Added
References

Mon, 22 Sep 2025 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Sat, 20 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Fri, 19 Sep 2025 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title wifi: cfg80211: fix use-after-free in cmp_bss()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-19T15:26:33.787Z

Updated: 2025-11-03T17:44:14.486Z

Reserved: 2025-04-16T07:20:57.143Z

Link: CVE-2025-39864

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-19T16:15:45.420

Modified: 2025-11-03T18:16:50.870

Link: CVE-2025-39864

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-09-19T00:00:00Z

Links: CVE-2025-39864 - Bugzilla