vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-3732): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | Sep 16, 2021 | Sep 30, 2021 | Aug 18, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
Sep 16, 2021
Added
Sep 30, 2021
Modified
Aug 18, 2025
Description
A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.
Solutions
ubuntu-upgrade-linux-image-4-15-0-1028-dell300xubuntu-upgrade-linux-image-4-15-0-1081-oracleubuntu-upgrade-linux-image-4-15-0-1096-raspi2ubuntu-upgrade-linux-image-4-15-0-1100-kvmubuntu-upgrade-linux-image-4-15-0-1109-gcpubuntu-upgrade-linux-image-4-15-0-1112-awsubuntu-upgrade-linux-image-4-15-0-1113-snapdragonubuntu-upgrade-linux-image-4-15-0-1124-azureubuntu-upgrade-linux-image-4-15-0-159-genericubuntu-upgrade-linux-image-4-15-0-159-generic-lpaeubuntu-upgrade-linux-image-4-15-0-159-lowlatencyubuntu-upgrade-linux-image-4-4-0-1117-awsubuntu-upgrade-linux-image-4-4-0-1118-kvmubuntu-upgrade-linux-image-4-4-0-1155-awsubuntu-upgrade-linux-image-4-4-0-239-genericubuntu-upgrade-linux-image-4-4-0-239-lowlatencyubuntu-upgrade-linux-image-5-10-0-1050-oemubuntu-upgrade-linux-image-5-11-0-1018-kvmubuntu-upgrade-linux-image-5-11-0-1020-awsubuntu-upgrade-linux-image-5-11-0-1020-azureubuntu-upgrade-linux-image-5-11-0-1020-oracleubuntu-upgrade-linux-image-5-11-0-1021-gcpubuntu-upgrade-linux-image-5-11-0-1021-raspiubuntu-upgrade-linux-image-5-11-0-1021-raspi-nolpaeubuntu-upgrade-linux-image-5-11-0-38-genericubuntu-upgrade-linux-image-5-11-0-38-generic-64kubuntu-upgrade-linux-image-5-11-0-38-generic-lpaeubuntu-upgrade-linux-image-5-11-0-38-lowlatencyubuntu-upgrade-linux-image-5-13-0-1014-oemubuntu-upgrade-linux-image-5-4-0-1006-ibmubuntu-upgrade-linux-image-5-4-0-1020-bluefieldubuntu-upgrade-linux-image-5-4-0-1025-gkeopubuntu-upgrade-linux-image-5-4-0-1045-raspiubuntu-upgrade-linux-image-5-4-0-1048-kvmubuntu-upgrade-linux-image-5-4-0-1054-gkeubuntu-upgrade-linux-image-5-4-0-1055-gcpubuntu-upgrade-linux-image-5-4-0-1056-gcpubuntu-upgrade-linux-image-5-4-0-1056-oracleubuntu-upgrade-linux-image-5-4-0-1058-awsubuntu-upgrade-linux-image-5-4-0-1062-azureubuntu-upgrade-linux-image-5-4-0-89-genericubuntu-upgrade-linux-image-5-4-0-89-generic-lpaeubuntu-upgrade-linux-image-5-4-0-89-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-edgeubuntu-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-20-04bubuntu-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
References
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