vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-20321): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:N/I:N/A:C) | Dec 22, 2021 | Jan 6, 2022 | Jan 23, 2025 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
Dec 22, 2021
Added
Jan 6, 2022
Modified
Jan 23, 2025
Description
A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
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-4-4-0-1120-awsubuntu-upgrade-linux-image-4-4-0-1121-kvmubuntu-upgrade-linux-image-4-4-0-1158-awsubuntu-upgrade-linux-image-4-4-0-242-genericubuntu-upgrade-linux-image-4-4-0-242-lowlatencyubuntu-upgrade-linux-image-5-11-0-1021-kvmubuntu-upgrade-linux-image-5-11-0-1023-awsubuntu-upgrade-linux-image-5-11-0-1023-azureubuntu-upgrade-linux-image-5-11-0-1023-oracleubuntu-upgrade-linux-image-5-11-0-1024-gcpubuntu-upgrade-linux-image-5-11-0-1024-raspiubuntu-upgrade-linux-image-5-11-0-1024-raspi-nolpaeubuntu-upgrade-linux-image-5-11-0-44-genericubuntu-upgrade-linux-image-5-11-0-44-generic-64kubuntu-upgrade-linux-image-5-11-0-44-generic-lpaeubuntu-upgrade-linux-image-5-11-0-44-lowlatencyubuntu-upgrade-linux-image-5-13-0-1007-kvmubuntu-upgrade-linux-image-5-13-0-1008-awsubuntu-upgrade-linux-image-5-13-0-1008-gcpubuntu-upgrade-linux-image-5-13-0-1009-azureubuntu-upgrade-linux-image-5-13-0-1011-oracleubuntu-upgrade-linux-image-5-13-0-1012-raspiubuntu-upgrade-linux-image-5-13-0-1012-raspi-nolpaeubuntu-upgrade-linux-image-5-13-0-1026-oemubuntu-upgrade-linux-image-5-13-0-23-genericubuntu-upgrade-linux-image-5-13-0-23-generic-64kubuntu-upgrade-linux-image-5-13-0-23-generic-lpaeubuntu-upgrade-linux-image-5-13-0-23-lowlatencyubuntu-upgrade-linux-image-5-4-0-1010-ibmubuntu-upgrade-linux-image-5-4-0-1023-bluefieldubuntu-upgrade-linux-image-5-4-0-1029-gkeopubuntu-upgrade-linux-image-5-4-0-1048-raspiubuntu-upgrade-linux-image-5-4-0-1051-kvmubuntu-upgrade-linux-image-5-4-0-1057-gkeubuntu-upgrade-linux-image-5-4-0-1059-gcpubuntu-upgrade-linux-image-5-4-0-1059-oracleubuntu-upgrade-linux-image-5-4-0-1065-azureubuntu-upgrade-linux-image-5-4-0-92-genericubuntu-upgrade-linux-image-5-4-0-92-generic-lpaeubuntu-upgrade-linux-image-5-4-0-92-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-dell300xubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-18-04ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-4ubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-4ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-lts-20-04ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-20-04cubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-18-04ubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragonubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-16-04ubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-hwe-20-04ubuntu-upgrade-linux-image-virtual-lts-xenial
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