CVE-2025-39965

MEDIUM EPSS 7.4%
Published Oct 13, 20258mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 13, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: xfrm_alloc_spi shouldn't use 0 as SPI x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create states and add them to the byspi list with this value. __xfrm_state_delete doesn't remove those states from the byspi list, since they shouldn't be there, and this shows up as a UAF the next time we go through the byspi list.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥6.6.103  –  <6.6.109
linuxlinux_kernel*≥6.12.43  –  <6.12.50
linuxlinux_kernel*≥6.15.11  –  <6.16
linuxlinux_kernel*≥6.16.2  –  <6.16.10
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/0baf92d0b1590b903c1f4ead75e61715e50e8146
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9fcedabaae0096f712bbb4ccca6a8538af1cd1c8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a78e55776522373c446f18d5002a8de4b09e6bf7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cd8ae32e4e4652db55bce6b9c79267d8946765a9
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0baf92d0b1590b903c1f4ead75e61715e50e8146
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9fcedabaae0096f712bbb4ccca6a8538af1cd1c8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a78e55776522373c446f18d5002a8de4b09e6bf7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cd8ae32e4e4652db55bce6b9c79267d8946765a9
    Patch