CVE-2021-29154

high

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.

References

Advisories
More

https://www.oracle.com/security-alerts/cpujul2022.html

https://www.openwall.com/lists/oss-security/2021/04/08/1

https://security.netapp.com/advisory/ntap-20210604-0006/

https://news.ycombinator.com/item?id=26757760

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5YFGIIF24475A2LNW3UWHW2SNCS3G7M/

https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html

http://packetstormsecurity.com/files/162434/Kernel-Live-Patch-Security-Notice-LSN-0076-1.html

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e4d4d456436bfb2fe412ee2cd489f7658449b098

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=26f55a59dc65ff77cd1c4b37991e26497fc68049

Details

Source: Mitre, NVD

Published: 2021-04-08

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H