ALT-PU-2020-1113-1
Package kernel-image-un-def updated to version 5.4.15-alt1 for branch p9 in task 245171.
Closed vulnerabilities
Published: 2021-10-15
BDU:2021-05741
Уязвимость реализации файла исходного кода arch/powerpc/kvm/book3s_hv_rmhandlers.S ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании
Severity: MEDIUM (5.5)
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
Published: 2021-10-28
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-43056
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.
Severity: MEDIUM (5.5)
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
- [oss-security] 20211028 Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8
- [oss-security] 20211028 Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
- https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
- FEDORA-2021-4fed2b55c4
- FEDORA-2021-4fed2b55c4
- FEDORA-2021-4320606094
- FEDORA-2021-4320606094
- FEDORA-2021-ed8c2e1098
- FEDORA-2021-ed8c2e1098
- https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u
- https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u