CVE-2022-49883

HIGH

Linux Kernel 6.0-6.0.8 - Out-of-bounds Read in KVM SMRAM Image Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format On 64 bit host, if the guest doesn't have X86_FEATURE_LM, KVM will access 16 gprs to 32-bit smram image, causing out-ouf-bound ram access. On 32 bit host, the rsm_load_state_64/enter_smm_save_state_64 is compiled out, thus access overflow can't happen.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494

Patch

https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588

Scores

CVSS v3 7.1

EPSS 0.0015

EPSS Percentile 4.8%

Attack Vector LOCAL

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

Details

CWE

CWE-125

Status published

Products (9)

linux/Kernel 6.0.0 - 6.0.8linux

Linux/Linux < 6.0

Linux/Linux 6.0

Linux/Linux 6.0.8 - 6.0.*

Linux/Linux 6.1

Linux/Linux b443183a25ab61840a12de92f8822849e017b9c8 - 696db303e54f7352623d9f640e6c51d8fa9d5588

Linux/Linux b443183a25ab61840a12de92f8822849e017b9c8 - a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494

linux/linux_kernel 6.1 rc1 (3 CPE variants)

linux/linux_kernel 6.0 - 6.0.8

Published May 01, 2025

Tracked Since Feb 18, 2026