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VULNERABILITIES

CVE-2026-43074 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f kernel.orgPatch
https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9 kernel.orgPatch
https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427 kernel.orgPatch
https://git.kernel.org/stable/c/902120be4f44947df6311002addc7faf69bdbff1 kernel.org
https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf kernel.orgPatch

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-401Missing Release of Memory after Effective Lifetime[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 6.4.1, < 6.6.136
>= 6.7, < 6.12.83
>= 6.13, < 6.18.24
>= 6.19, < 6.19.14
6.4 -

CPE

  • 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:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-43074
NVD Published Date:
May 6, 2026
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org
CVE-2026-43074 Details - Not Deferred