vulnerability

Ubuntu: (Multiple Advisories) (CVE-2021-20317): Linux kernel vulnerabilities

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Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
Sep 27, 2021
Added
Jan 6, 2022
Modified
Mar 22, 2023

Description

A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.

Solution(s)

ubuntu-upgrade-linux-image-4-15-0-1033-dell300xubuntu-upgrade-linux-image-4-15-0-1085-oracleubuntu-upgrade-linux-image-4-15-0-1101-raspi2ubuntu-upgrade-linux-image-4-15-0-1105-kvmubuntu-upgrade-linux-image-4-15-0-1114-gcpubuntu-upgrade-linux-image-4-15-0-1118-awsubuntu-upgrade-linux-image-4-15-0-1118-snapdragonubuntu-upgrade-linux-image-4-15-0-1129-azureubuntu-upgrade-linux-image-4-15-0-166-genericubuntu-upgrade-linux-image-4-15-0-166-generic-lpaeubuntu-upgrade-linux-image-4-15-0-166-lowlatencyubuntu-upgrade-linux-image-4-4-0-1102-awsubuntu-upgrade-linux-image-4-4-0-1103-kvmubuntu-upgrade-linux-image-4-4-0-1138-awsubuntu-upgrade-linux-image-4-4-0-222-genericubuntu-upgrade-linux-image-4-4-0-222-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-dell300xubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-18-04ubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragonubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-16-04ubuntu-upgrade-linux-image-virtual-lts-xenial

References

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