{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23156",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.978Z",
        "datePublished": "2026-02-14T16:01:23.215Z",
        "dateUpdated": "2026-05-11T22:01:17.796Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:01:17.796Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: fix error propagation in efivar_entry_get()\n\nefivar_entry_get() always returns success even if the underlying\n__efivar_entry_get() fails, masking errors.\n\nThis may result in uninitialized heap memory being copied to userspace\nin the efivarfs_file_read() path.\n\nFix it by returning the error from __efivar_entry_get()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/efivarfs/vars.c"
                    ],
                    "versions": [
                        {
                            "version": "2d82e6227ea189c0589e7383a36616ac2a2d248c",
                            "lessThan": "3960f1754664661a970dc9ebbab44ff93a0b4c42",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d82e6227ea189c0589e7383a36616ac2a2d248c",
                            "lessThan": "510a16f1c5c1690b33504052bc13fbc2772c23f8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d82e6227ea189c0589e7383a36616ac2a2d248c",
                            "lessThan": "89b8ca709eeeabcc11ebba64806677873a2787a8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d82e6227ea189c0589e7383a36616ac2a2d248c",
                            "lessThan": "e4e15a0a4403c96d9898d8398f0640421df9cb16",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d82e6227ea189c0589e7383a36616ac2a2d248c",
                            "lessThan": "4b22ec1685ce1fc0d862dcda3225d852fb107995",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/efivarfs/vars.c"
                    ],
                    "versions": [
                        {
                            "version": "6.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.162",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.123",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.69",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.9",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "6.0",
                                    "versionEndExcluding": "6.1.162"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.6.123"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.12.69"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.18.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42"
                },
                {
                    "url": "https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995"
                }
            ],
            "title": "efivarfs: fix error propagation in efivar_entry_get()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}