PulseLinuxLINUX UPDATE INTELLIGENCE
CVE Database›CVE-2020-29534

CVE-2020-29534

kernel: 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() allowing for privileges escalation

Loading…

Severity

Unknown

Red Hat Product Security

0

CVSS 3.1

Review impact separately from score.

Published · December 3, 2020

Updated · June 28, 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.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N

CWE-266 · Incorrect Privilege Assignment