VULNERABILITY INTELLIGENCE

CVE-2021-28951

CVSS score5.5 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2021-03-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25.

Weakness classification

  • nvd@nist.gov: CWE-667

Primary references