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Ubuntu: USN-4948-1 (CVE-2021-28951): Linux kernel (OEM) vulnerabilities

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Ubuntu: USN-4948-1 (CVE-2021-28951): Linux kernel (OEM) vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
03/20/2021
Created
05/14/2021
Added
05/12/2021
Modified
04/01/2022

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.

Solution(s)

  • ubuntu-upgrade-linux-image-5-10-0-1026-oem
  • ubuntu-upgrade-linux-image-oem-20-04b

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