CVE-2022-49883CWE-125

CVE-2022-49883

High · published May 1, 2025

CVSS v3.1
7.1
EPSS
0%
Percentile
7.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00186 · 7.8th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2025-05-01T19:16Z
Affected products (4)
ProductVersionsFixed in
linux/linux_kernel≥ 6.0, < 6.0.86.0.8
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (2)
https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 01 MAY 14:10Z
    KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format
    cvelistv5