CVE-2021-29154

CVE Details

Release Date:	2021-04-08
Impact:	None	What is this?

Description

BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.

See more information about CVE-2021-29154 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel)	ELSA-2021-3327	2021-08-31
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9222	2021-05-10
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9306	2021-06-15
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9223	2021-05-10
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9307	2021-06-15
Oracle Linux version 8 (kernel)	ELSA-2022-1988	2022-05-17
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9306	2021-06-15
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9307	2021-06-15