CVE-2021-37576

high

Description

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

References

https://lore.kernel.org/linuxppc-dev/[email protected]/T/#u

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f62f3c20647ebd5fb6ecb8f0b477b9281c44c10a

http://www.openwall.com/lists/oss-security/2021/07/27/2

https://lists.fedoraproject.org/archives/list/[email protected]/message/Z2YZ2DNURMYYVDT2NYAFDESJC35KCUDS/

https://lists.fedoraproject.org/archives/list/[email protected]/message/WDFA7DSQIPM7XPNXJBXFWXHJFVUBCAG6/

https://security.netapp.com/advisory/ntap-20210917-0005/

https://www.debian.org/security/2021/dsa-4978

Details

Source: MITRE

Published: 2021-07-26

Updated: 2023-03-01

Type: CWE-787

Risk Information

CVSS v2

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH