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Vulnerabilities

Vulnerability · CVE-2022-49883

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'

Published May 1, 2025 · catalog updated Oct 15, 2026 · Linux Linux

Check this week

CVE-2022-49883 is not in CISA KEV. FIRST estimates a 19.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
19.00%
Remediation
Version ranges on file
Affected products
cpe linux/linux kernel · vendor Linux Linux b443183a25ab61840a12de92f8822849e017b9c8 <696db303e54f7352623d9f640e6c51d8fa9d5588

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernel6.1
  • vendor Linux Linux b443183a25ab61840a12de92f8822849e017b9c8 <696db303e54f7352623d9f640e6c51d8fa9d5588b443183a25ab61840a12de92f8822849e017b9c8 <696db303e54f7352623d9f640e6c51d8fa9d5588

How to fix CVE-2022-49883

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-49883 is not in CISA KEV. FIRST estimates a 19.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Which versions are affected?

Compare what you have installed with linux/linux kernel 6.1; Linux Linux b443183a25ab61840a12de92f8822849e017b9c8 <696db303e54f7352623d9f640e6c51d8fa9d5588 b443183a25ab61840a12de92f8822849e017b9c8 <696db303e54f7352623d9f640e6c51d8fa9d5588. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-125: Out-of-bounds Read. EPSS 19.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 1, 2025 · NIST NVD

    Detected

    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.

  2. Oct 15, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2022-49883

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-49883

    30-day exploitation probability 19.0%

    first.org
  • EUVDVulnerability recordEUVD-2025-12899

    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 acce

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2022-49883

    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 ac

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.