CVE-2020-29534

PoC —

CVSS 3.1

7.8 high

EPSS

<1%p39

Published

Dec 3, 2020 (Dec 3, 2020)

Modified

Jun 17, 2026

Description

An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.

Vendors: linux
Products: linux kernel
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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