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CVE-2021-3732

Description

A flaw was found in the Linux kernels 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.

Risk Information

Base Score
5.5
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score
Exploitation Probability
0.022

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-5094-1) linux-image-kvm_4.15.0.1100.96_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-generic_4.15.0.159.148_i386.debLinux
Linux kernel (USN-5094-1) linux-image-generic_4.15.0.159.148_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-virtual_4.15.0.159.148_i386.debLinux
Linux kernel (USN-5094-1) linux-image-virtual_4.15.0.159.148_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-dell300x_4.15.0.1028.30_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-lowlatency_4.15.0.159.148_i386.debLinux
Linux kernel (USN-5094-1) linux-image-lowlatency_4.15.0.159.148_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-aws-lts-18.04_4.15.0.1112.115_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-gcp-lts-18.04_4.15.0.1109.128_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-1100-kvm_4.15.0-1100.102_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-1109-gcp_4.15.0-1109.123_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-1112-aws_4.15.0-1112.119_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-azure-lts-18.04_4.15.0.1124.97_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-oracle-lts-18.04_4.15.0.1081.91_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-1124-azure_4.15.0-1124.137_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-1081-oracle_4.15.0-1081.89_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-159-generic_4.15.0-159.167_i386.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-159-generic_4.15.0-159.167_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-1028-dell300x_4.15.0-1028.33_amd64.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-159-lowlatency_4.15.0-159.167_i386.debLinux
Linux kernel (USN-5094-1) linux-image-4.15.0-159-lowlatency_4.15.0-159.167_amd64.debLinux
Linux kernel for OEM systems (USN-5096-1) linux-image-oem-20.04c_5.13.0.1014.18_amd64.debLinux
Linux kernel for OEM systems (USN-5096-1) linux-image-5.13.0-1014-oem_5.13.0-1014.18_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-aws_5.11.0.1020.21_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-aws_5.11.0.1020.21~20.04.19_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-gcp_5.11.0.1021.21_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-gcp_5.11.0.1021.23~20.04.20_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-gke_5.11.0.1021.21_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-kvm_5.11.0.1018.19_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-azure_5.11.0.1020.21_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-generic_5.11.0.38.39_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-virtual_5.11.0.38.39_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-oem-20.04_5.11.0.38.39_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-azure-edge_5.15.0.1054.62~20.04.43_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-lowlatency_5.11.0.38.39_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1018-kvm_5.11.0-1018.19_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1020-aws_5.11.0-1020.21_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1020-aws_5.11.0-1020.21~20.04.2_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1021-gcp_5.11.0-1021.23_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1021-gcp_5.11.0-1021.23~20.04.1_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1020-azure_5.11.0-1020.21_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1020-azure_5.11.0-1020.21~20.04.1_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-38-generic_5.11.0-38.42_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-38-generic_5.11.0-38.42~20.04.1_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-generic-hwe-20.04_5.11.0.38.42~20.04.17_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-virtual-hwe-20.04_5.11.0.38.42~20.04.17_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-38-lowlatency_5.11.0-38.42_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-38-lowlatency_5.11.0-38.42~20.04.1_amd64.debLinux
Linux kernel (USN-5113-1) linux-image-lowlatency-hwe-20.04_5.11.0.38.42~20.04.17_amd64.debLinux
Linux kernel for OEM systems (USN-5115-1) linux-image-oem-20.04_5.10.0.1050.52_amd64.debLinux
Linux kernel for OEM systems (USN-5115-1) linux-image-oem-20.04b_5.10.0.1050.52_amd64.debLinux
Linux kernel for OEM systems (USN-5115-1) linux-image-5.10.0-1050-oem_5.10.0-1050.52_amd64.debLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update bpftool-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-abi-stablelists-4.18.0-348.el8.noarch.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-core-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-cross-headers-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-core-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-devel-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-modules-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-modules-extra-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-devel-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-doc-4.18.0-348.el8.noarch.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-headers-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-modules-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-modules-extra-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-tools-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-tools-libs-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update perf-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update python3-perf-4.18.0-348.el8.x86_64.rpmLinux
Kernel-uek update (ELSA-2021-9577) kernel-uek-4.1.12-124.58.2.el7uek.x86_64.rpmLinux
Kernel-uek-debug update (ELSA-2021-9577) kernel-uek-debug-4.1.12-124.58.2.el7uek.x86_64.rpmLinux
Kernel-uek-debug-devel update (ELSA-2021-9577) kernel-uek-debug-devel-4.1.12-124.58.2.el7uek.x86_64.rpmLinux
Kernel-uek-devel update (ELSA-2021-9577) kernel-uek-devel-4.1.12-124.58.2.el7uek.x86_64.rpmLinux
Kernel-uek-doc update (ELSA-2021-9577) kernel-uek-doc-4.1.12-124.58.2.el7uek.noarch.rpmLinux
Kernel-uek-firmware update (ELSA-2021-9577) kernel-uek-firmware-4.1.12-124.58.2.el7uek.noarch.rpmLinux
Linux kernel (USN-5113-1) linux-image-5.11.0-1020-oracle_5.11.0-1020.21~20.04.1_amd64.debLinux
raspi (USN-5116-2) linux-image-5.4.0-1006-ibm_5.4.0-1006.7_amd64.debLinux
raspi (USN-5116-2) linux-image-5.4.0-1056-gcp_5.4.0-1056.60_amd64.debLinux
raspi (USN-5116-2) linux-image-5.4.0-1056-gcp_5.4.0-1056.60~18.04.1_amd64.debLinux
kernel Security Update (ALAS-2021-1704) kernel-livepatch-4.14.246-187.474-1.0-0.amzn2.x86_64.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234