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CVE-2021-31440

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-13661.

Risk Information

Base Score
7.0
MODERATE
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.667

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-4997-1) linux-image-aws_5.11.0.1011.11_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-gcp_5.11.0.1011.11_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-gke_5.11.0.1011.11_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-azure_5.11.0.1009.9_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-oracle_5.11.0.1010.10_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-generic_5.11.0.22.23_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-virtual_5.11.0.22.23_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-lowlatency_5.11.0.22.23_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-5.11.0-1011-aws_5.11.0-1011.11_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-5.11.0-1011-gcp_5.11.0-1011.12_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-5.11.0-1009-azure_5.11.0-1009.9_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-5.11.0-22-generic_5.11.0-22.23_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-5.11.0-1010-oracle_5.11.0-1010.10_amd64.debLinux
Linux kernel (USN-4997-1) linux-image-5.11.0-22-lowlatency_5.11.0-22.23_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-aws_5.8.0.1038.40_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-aws_5.8.0.1038.40~20.04.11_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-gcp_5.8.0.1035.35_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-gcp_5.8.0.1035.37~20.04.9_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-gke_5.8.0.1035.35_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-kvm_5.8.0.1030.32_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-azure_5.8.0.1036.36_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-azure_5.8.0.1036.38~20.04.8_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-oracle_5.8.0.1033.32_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-oracle_5.8.0.1033.34~20.04.9_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-generic_5.8.0.59.64_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-virtual_5.8.0.59.64_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-lowlatency_5.8.0.59.64_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1030-kvm_5.8.0-1030.32_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1035-gcp_5.8.0-1035.37_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1035-gcp_5.8.0-1035.37~20.04.1_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1038-aws_5.8.0-1038.40_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1038-aws_5.8.0-1038.40~20.04.1_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1036-azure_5.8.0-1036.38_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1036-azure_5.8.0-1036.38~20.04.1_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-59-generic_5.8.0-59.66_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-59-generic_5.8.0-59.66~20.04.1_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1033-oracle_5.8.0-1033.34_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-1033-oracle_5.8.0-1033.34~20.04.1_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-generic-hwe-20.04_5.8.0.59.66~20.04.42_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-virtual-hwe-20.04_5.8.0.59.66~20.04.42_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-59-lowlatency_5.8.0-59.66_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-5.8.0-59-lowlatency_5.8.0-59.66~20.04.1_amd64.debLinux
Linux kernel (USN-4999-1) linux-image-lowlatency-hwe-20.04_5.8.0.59.66~20.04.42_amd64.debLinux
Linux kernel for OEM systems (USN-5001-1) linux-image-oem-20.04_5.10.0.1033.34_amd64.debLinux
Linux kernel for OEM systems (USN-5001-1) linux-image-oem-20.04b_5.10.0.1033.34_amd64.debLinux
Linux kernel for OEM systems (USN-5001-1) linux-image-5.10.0-1033-oem_5.10.0-1033.34_amd64.debLinux
Linux kernel for cloud environments (USN-4997-2) linux-image-kvm_5.11.0.1009.9_amd64.debLinux
Linux kernel for cloud environments (USN-4997-2) linux-image-5.11.0-1009-kvm_5.11.0-1009.9_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

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