{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49610",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T02:21:30.417Z",
        "datePublished": "2025-02-26T02:23:33.299Z",
        "dateUpdated": "2026-05-23T15:22:32.065Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:22:32.065Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: VMX: Prevent RSB underflow before vmenter\n\nOn VMX, there are some balanced returns between the time the guest's\nSPEC_CTRL value is written, and the vmenter.\n\nBalanced returns (matched by a preceding call) are usually ok, but it's\nat least theoretically possible an NMI with a deep call stack could\nempty the RSB before one of the returns.\n\nFor maximum paranoia, don't allow *any* returns (balanced or otherwise)\nbetween the SPEC_CTRL write and the vmenter.\n\n  [ bp: Fix 32-bit build. ]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/kernel/asm-offsets.c",
                        "arch/x86/kernel/cpu/bugs.c",
                        "arch/x86/kvm/vmx/capabilities.h",
                        "arch/x86/kvm/vmx/vmenter.S",
                        "arch/x86/kvm/vmx/vmx.c",
                        "arch/x86/kvm/vmx/vmx.h",
                        "arch/x86/kvm/vmx/vmx_ops.h"
                    ],
                    "versions": [
                        {
                            "version": "d28b387fb74da95d69d2615732f50cceb38e9a4d",
                            "lessThan": "afd743f6dde87296c6f3414706964c491bb85862",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d28b387fb74da95d69d2615732f50cceb38e9a4d",
                            "lessThan": "07853adc29a058c5fd143c14e5ac528448a72ed9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "44491a23b73789c0a914af4ea55ccf8968adf90b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fc6aae9f407810cb153a9133c28735871f9f0a16",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.16.57",
                            "lessThan": "3.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.4.168",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/kernel/asm-offsets.c",
                        "arch/x86/kernel/cpu/bugs.c",
                        "arch/x86/kvm/vmx/capabilities.h",
                        "arch/x86/kvm/vmx/vmenter.S",
                        "arch/x86/kvm/vmx/vmx.c",
                        "arch/x86/kvm/vmx/vmx.h",
                        "arch/x86/kvm/vmx/vmx_ops.h"
                    ],
                    "versions": [
                        {
                            "version": "4.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.14",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.18.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16.57"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4.168"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/afd743f6dde87296c6f3414706964c491bb85862"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07853adc29a058c5fd143c14e5ac528448a72ed9"
                }
            ],
            "title": "KVM: VMX: Prevent RSB underflow before vmenter",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}