CVE-2021-43056 — Unchecked Return Value in Kernel

CWE-252 — Unchecked Return Value18 documents7 sources
Severity
5.5MEDIUMNVD
OSV7.8OSV6.5OSV4.7OSV3.3
EPSS
0.0%
top 93.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelDebian LinuxFedoraproject Fedora+1 more
Timeline
PublishedOct 28
Latest updateFeb 14

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages5 packages

▶NVDlinux/linux_kernel5.2 — 5.4.15
▶Debianlinux/linux_kernel< 5.10.84-1+3
▶Ubuntulinux/linux_kernel< 5.4.0-92.103+1
▶debiandebian/linux< linux 5.14.16-1 (bookworm)
▶Palo Altopaloalto/pan-os

Also affects: Fedora 33, 34, 35

Patches

Patch: www.openwall.com ↗Patch: git.kernel.org ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

8
GHSA
GHSA-jwg8-85wj-r8fp: An issue was discovered in the Linux kernel for powerpc before 5↗2022-05-24
▶
OSV
linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4 regression↗2022-01-12
▶
OSV
linux-oem-5.13 vulnerabilities↗2022-01-11
▶
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, l↗2022-01-06
▶
OSV
linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities↗2022-01-06
▶

📋Vendor Advisories

9
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
Ubuntu
Linux kernel regression↗2022-01-12
▶
Ubuntu
Linux kernel (OEM) vulnerabilities↗2022-01-11
▶
Ubuntu
Linux kernel vulnerabilities↗2022-01-06
▶
Ubuntu
Linux kernel vulnerabilities↗2022-01-06
▶