CVE-2021-20321
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.
Risk Information
Base Score
4.7
MODERATE
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.019
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| (RHSA-2021:5227) kernel security and bug fix update bpftool-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-abi-stablelists-4.18.0-348.7.1.el8_5.noarch.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-core-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-cross-headers-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-debug-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-debug-core-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-debug-devel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-debug-modules-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-debug-modules-extra-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-devel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-doc-4.18.0-348.7.1.el8_5.noarch.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-headers-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-modules-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-modules-extra-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-tools-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update kernel-tools-libs-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update perf-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| (RHSA-2021:5227) kernel security and bug fix update python3-perf-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Bpftool update (ELSA-2021-5227) bpftool-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel update (ELSA-2021-5227) kernel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-abi-stablelists update (ELSA-2021-5227) kernel-abi-stablelists-4.18.0-348.7.1.el8_5.noarch.rpm | Linux |
| Kernel-core update (ELSA-2021-5227) kernel-core-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-cross-headers update (ELSA-2021-5227) kernel-cross-headers-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-debug update (ELSA-2021-5227) kernel-debug-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-debug-core update (ELSA-2021-5227) kernel-debug-core-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-debug-devel update (ELSA-2021-5227) kernel-debug-devel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-debug-modules update (ELSA-2021-5227) kernel-debug-modules-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-debug-modules-extra update (ELSA-2021-5227) kernel-debug-modules-extra-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-devel update (ELSA-2021-5227) kernel-devel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-doc update (ELSA-2021-5227) kernel-doc-4.18.0-348.7.1.el8_5.noarch.rpm | Linux |
| Kernel-headers update (ELSA-2021-5227) kernel-headers-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-modules update (ELSA-2021-5227) kernel-modules-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-modules-extra update (ELSA-2021-5227) kernel-modules-extra-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-tools update (ELSA-2021-5227) kernel-tools-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-tools-libs update (ELSA-2021-5227) kernel-tools-libs-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Kernel-tools-libs-devel update (ELSA-2021-5227) kernel-tools-libs-devel-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Perf update (ELSA-2021-5227) perf-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Python3-perf update (ELSA-2021-5227) python3-perf-4.18.0-348.7.1.el8_5.x86_64.rpm | Linux |
| Linux kernel (USN-5208-1) linux-image-aws_5.11.0.1023.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-aws_5.13.0.1008.10_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-aws_5.11.0.1023.24~20.04.23_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-gcp_5.13.0.1008.9_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-gcp_5.11.0.1024.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-gcp_5.11.0.1024.26~20.04.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-gke_5.13.0.1008.9_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-gke_5.11.0.1024.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-kvm_5.13.0.1007.7_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-kvm_5.11.0.1021.22_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-azure_5.11.0.1023.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-azure_5.13.0.1009.10_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-azure_5.11.0.1023.24~20.04.23_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-oracle_5.11.0.1023.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-oracle_5.13.0.1011.13_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-oracle_5.11.0.1023.24~20.04.16_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-generic_5.11.0.44.44_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-generic_5.13.0.23.34_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-virtual_5.11.0.44.44_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-virtual_5.13.0.23.34_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-oem-20.04_5.11.0.44.44_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-oem-20.04_5.13.0.23.34_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-lowlatency_5.11.0.44.44_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-lowlatency_5.13.0.23.34_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1021-kvm_5.11.0-1021.23_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1023-aws_5.11.0-1023.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1023-aws_5.11.0-1023.24~20.04.1_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1024-gcp_5.11.0-1024.26_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1024-gcp_5.11.0-1024.26~20.04.1_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-1007-kvm_5.13.0-1007.7_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-1008-aws_5.13.0-1008.9_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-1008-gcp_5.13.0-1008.9_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1023-azure_5.11.0-1023.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1023-azure_5.11.0-1023.24~20.04.1_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-44-generic_5.11.0-44.48_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-44-generic_5.11.0-44.48~20.04.2_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-1009-azure_5.13.0-1009.10_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-23-generic_5.13.0-23.23_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-generic-hwe-20.04_5.11.0.44.48~20.04.22_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-virtual-hwe-20.04_5.11.0.44.48~20.04.22_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1023-oracle_5.11.0-1023.24_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-1023-oracle_5.11.0-1023.24~20.04.1_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-1011-oracle_5.13.0-1011.13_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-44-lowlatency_5.11.0-44.48_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.11.0-44-lowlatency_5.11.0-44.48~20.04.2_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-5.13.0-23-lowlatency_5.13.0-23.23_amd64.deb | Linux |
| Linux kernel (USN-5208-1) linux-image-lowlatency-hwe-20.04_5.11.0.44.48~20.04.22_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-kvm_4.15.0.1105.101_amd64.deb | Linux |
| Linux kernel for OEM systems (USN-5218-1) linux-image-oem-20.04c_5.13.0.1026.29_amd64.deb | Linux |
| Linux kernel for OEM systems (USN-5218-1) linux-image-5.13.0-1026-oem_5.13.0-1026.32_amd64.deb | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-debuginfo-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debuginfo-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debugsource-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-devel-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-azure-4.12.14-16.97.1.noarch.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-azure-4.12.14-16.97.1.noarch.rpm | Linux |
| SUSE-SU-2022:1651-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-azure-4.12.14-16.97.1.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-debuginfo-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debuginfo-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debugsource-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-debuginfo-4.12.14-122.121.2.x86_64.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-4.12.14-122.121.2.noarch.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-macros-4.12.14-122.121.2.noarch.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-4.12.14-122.121.2.noarch.rpm | Linux |
| SUSE-SU-2022:1686-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-4.12.14-122.121.2.x86_64.rpm | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-1105-kvm_4.15.0-1105.107_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-1114-gcp_4.15.0-1114.128_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-1118-aws_4.15.0-1118.125_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-1129-azure_4.15.0-1129.142_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-1085-oracle_4.15.0-1085.93_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-166-generic_4.15.0-166.174_i386.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-166-generic_4.15.0-166.174_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-1033-dell300x_4.15.0-1033.38_amd64.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-166-lowlatency_4.15.0-166.174_i386.deb | Linux |
| Linux kernel (USN-5209-1) linux-image-4.15.0-166-lowlatency_4.15.0-166.174_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1010-ibm_5.4.0-1010.11_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1051-kvm_5.4.0-1051.53_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1057-gke_5.4.0-1057.60_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1057-gke_5.4.0-1057.60~18.04.1_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1059-gcp_5.4.0-1059.63_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1059-gcp_5.4.0-1059.63~18.04.1_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1029-gkeop_5.4.0-1029.30_amd64.deb | Linux |
| raspi (USN-5210-1) linux-image-5.4.0-1029-gkeop_5.4.0-1029.30~18.04.2_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1065-azure_5.4.0-1065.68_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1065-azure_5.4.0-1065.68~18.04.1_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-92-generic_5.4.0-92.103_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-92-generic_5.4.0-92.103~18.04.2_i386.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-92-generic_5.4.0-92.103~18.04.2_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1059-oracle_5.4.0-1059.63_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-1059-oracle_5.4.0-1059.63~18.04.1_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-92-lowlatency_5.4.0-92.103_amd64.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-92-lowlatency_5.4.0-92.103~18.04.2_i386.deb | Linux |
| Linux kernel (USN-5210-1) linux-image-5.4.0-92-lowlatency_5.4.0-92.103~18.04.2_amd64.deb | Linux |
| kernel Security Update (ALAS-2021-1719) kernel-livepatch-4.14.252-195.481-1.0-0.amzn2.x86_64.rpm | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234