CVE-2021-43056

Sažetak

An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.

Reference

https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
http://www.openwall.com/lists/oss-security/2021/10/28/1
https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBM4FP3IT3JZ2O7EBS7TEOG657N4ZGRE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRAIS3PG4EV5WFLYESR6FXWM4BJJGWVA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AA7EAPPKWG4LMTQQLNNSKATY6ST2KQFE/

CVSS

Base:	4.9
Impact:	6.9
Exploitability:	3.9

Pristup

Vektor	Složenost	Autentikacija
LOCAL	LOW	NONE

Impact

Povjerljivost	Cjelovitost	Dostupnost
NONE	NONE	COMPLETE

CVSS vektor

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

Zadnje važnije ažuriranje

07-11-2023 - 03:39

Objavljeno

28-10-2021 - 04:15