CVE-2026-43074

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.8 /10

CVSS v3 : HIGH

V3 Legend

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
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

01 Jun 2026, 17:17

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/902120be4f44947df6311002addc7faf69bdbff1 -
  • () https://git.kernel.org/stable/c/a6d57084372161f86660bc4607784420e00efe2c -

20 May 2026, 23:20

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
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:rc7:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CWE CWE-401
References () https://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f - () https://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f - Patch
References () https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9 - () https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9 - Patch
References () https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427 - () https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427 - Patch
References () https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf - () https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf - Patch
References () https://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322 - () https://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322 - Patch

08 May 2026, 13:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8

06 May 2026, 10:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-06 10:16

Updated : 2026-06-01 17:17

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