CVE-2025-39965

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc7::::::

History

No history.

Information

Published : 2025-10-13 14:15

Updated : 2026-02-03 14:14

NVD link : CVE-2025-39965

Mitre link : CVE-2025-39965

CVE.ORG link : CVE-2025-39965

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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