CVE-2021-38300

 

Published at: - 20-09-2021 08:15

Last modified: - 26-10-2022 01:44

Total changes: - 8

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• http://www.openwall.com/lists/oss-security/2021/09/15/5
• https://security.netapp.com/advisory/ntap-20211008-0003/
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37cb28ec7d3a36a5bace7063a3dba633ab110f8b
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
• DSA-5096-Third Party Advisory
• [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-38300

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures