Home

CVE-2021-38166

Description

In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.

Risk Information

Base Score
7.8
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.095

Associated Vulnerability

VulnerabilityOS Platform
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
Linux kernel (USN-5113-1) linux-image-5.11.0-1020-oracle_5.11.0-1020.21~20.04.1_amd64.debLinux
Out-of-bounds Write Vulnerability (CVE-2021-38166)NCM

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