CVE-2026-43074

In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while it still being used by another concurrent thread. Defer the kfree() to an RCU callback to prevent UAF.

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/07712db80857d5d09ae08f3df85a708ecfc3b61f	Patch
https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9	Patch
https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427	Patch
https://git.kernel.org/stable/c/902120be4f44947df6311002addc7faf69bdbff1
https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf	Patch
https://git.kernel.org/stable/c/a6d57084372161f86660bc4607784420e00efe2c
https://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322	Patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

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:6.4:-::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc5::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc6::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc7::::::

History

19 Oct 2026, 20:18

Type	Values Removed	Values Added
CWE		CWE-416

15 Oct 2026, 02:19

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-784472.html -

Information

Published : 2026-05-06 10:16

Updated : 2026-10-19 20:18

NVD link : CVE-2026-43074

Mitre link : CVE-2026-43074

CVE.ORG link : CVE-2026-43074

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

CWE-416

Use After Free

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