PT-2025-18600 · Linux+1 · Linux Kernel+1

Published 2022-10-28 · Updated 2025-05-02 · CVE-2022-49883

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the KVM (Kernel-based Virtual Machine) on x86 systems, specifically with the SMRAM (System Management RAM) image. On a 64-bit host, if the guest does not have the X86 FEATURE LM feature, KVM will access 16 GPRs (General Purpose Registers) in the 32-bit SMRAM image, causing an out-of-bounds RAM access. This issue does not occur on 32-bit hosts due to the compilation of specific functions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Buffer Overflow

Weakness Enumeration

CWE-125

CWE-119

Related Identifiers

BDU:2026-03916

CVE-2022-49883

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49883.json · Exploit
• https://linux.oracle.com/errata/ELSA-2025-6966.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03916 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49883 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49883 · Vendor Advisory
• https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494 · Patch
• https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588 · Patch
• https://ubuntu.com/security/CVE-2022-49883 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49883 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49883 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49883 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49883 · Vendor Advisory
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.8 · Note
• https://twitter.com/CVEnew/status/1917950837009338417 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note