CVE-2025-39864

HIGH EPSS 4.8%
Published Sep 19, 20259mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Sep 19, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥5.4  –  <5.4.299
linuxlinux_kernel*≥5.5  –  <5.10.243
linuxlinux_kernel*≥5.11  –  <5.15.192
linuxlinux_kernel*≥5.16  –  <6.1.151
linuxlinux_kernel*≥6.2  –  <6.6.105
linuxlinux_kernel*≥6.7  –  <6.12.46
linuxlinux_kernel*≥6.13  –  <6.16.6
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
debiandebian_linux11.0any

References 12

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-089022.html
  • git.kernel.org https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853
    Patch