arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.
CVE-2021-38300 - High Severity Vulnerability
Our patched kernel sources. This repository is generated from https://github.com/openSUSE/kernel-source
Library home page: https://github.com/openSUSE/kernel.git
Found in HEAD commit: 662967c12efbaddc3a053fdcbe4461a3a774fd7f
Found in base branch: master
arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.
Publish Date: 2021-09-20
URL: CVE-2021-38300
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://www.linuxkernelcves.com/cves/CVE-2021-38300
Release Date: 2021-09-20
Fix Resolution: v4.14.251,v4.19.211,v5.4.153,v5.10.71,v5.14.10,v5.15-rc4
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