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Vulnerability · Published Feb 26, 2025 · Assigned by Linux

CVE-2022-49610KVM: VMX: Prevent RSB underflow before vmenter

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 86.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Prevent RSB underflow before vmenter On VMX, there are some balanced returns between the time the guest's SPEC_CTRL value is written, and the vmenter. Balanced returns (matched by a preceding call) are usually ok, but it's at least theoretically possible an NMI with a deep call stack could empty the RSB before one of the returns. For maximum paranoia, don't allow *any* returns (balanced or otherwise) between the SPEC_CTRL write and the vmenter. [ bp: Fix 32-bit build. ]

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.18.14-1DEBIAN-CVE-2022-49610
Debian:13linux5.18.14-1DEBIAN-CVE-2022-49610
Debian:14linux5.18.14-1DEBIAN-CVE-2022-49610
Ubuntu:22.04:LTSlinux5.15.0-46.49UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-aws5.15.0-1017.21UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-azure5.15.0-1017.20UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-gcp5.15.0-1016.21UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-gke5.15.0-1014.17UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1002.4UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-ibm5.15.0-1012.14UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1013.17UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-kvm5.15.0-1016.19UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-46.49UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-oracle5.15.0-1016.20UBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-raspi5.15.0-1013.15UBUNTU-CVE-2022-49610
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49610
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49610

Affected products (as reported)

VendorProductVersions
Linux Linux d28b387fb74da95d69d2615732f50cceb38e9a4d – before afd743f6dde87296c6f3414706964c491bb85862d28b387fb74da95d69d2615732f50cceb38e9a4d – before 07853adc29a058c5fd143c14e5ac528448a72ed944491a23b73789c0a914af4ea55ccf8968adf90bfc6aae9f407810cb153a9133c28735871f9f0a163.16.57 – before 3.174.4.168 – before 4.5
Linux Linux 4.16

References