{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-45876",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.081Z",
        "datePublished": "2026-05-27T12:16:43.350Z",
        "dateUpdated": "2026-05-27T12:16:43.350Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-27T12:16:43.350Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/gcs: Fix error handling in arch_set_shadow_stack_status()\n\nalloc_gcs() returns an error-encoded pointer on failure, which comes\nfrom do_mmap(), not NULL.\n\nThe current NULL check fails to detect errors, which could lead to using\nan invalid GCS address.\n\nUse IS_ERR_VALUE() to properly detect errors, consistent with the\ncheck in gcs_alloc_thread_stack()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm64/mm/gcs.c"
                    ],
                    "versions": [
                        {
                            "version": "b57180c75c7ebff6613886cb69ef6e283a10358b",
                            "lessThan": "c787a235deb33be6eda40beee8f561da5fd8cb8c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b57180c75c7ebff6613886cb69ef6e283a10358b",
                            "lessThan": "a4741114c9622346c4bbb8cc2bbd88153616ffaf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b57180c75c7ebff6613886cb69ef6e283a10358b",
                            "lessThan": "53c998527ffa60f9deda8974a11ad39790684159",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm64/mm/gcs.c"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.14",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.13",
                                    "versionEndExcluding": "6.18.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "6.19.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c787a235deb33be6eda40beee8f561da5fd8cb8c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a4741114c9622346c4bbb8cc2bbd88153616ffaf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/53c998527ffa60f9deda8974a11ad39790684159"
                }
            ],
            "title": "arm64/gcs: Fix error handling in arch_set_shadow_stack_status()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}