{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43171",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.990Z",
        "datePublished": "2026-05-06T11:27:46.698Z",
        "dateUpdated": "2026-05-11T22:19:09.627Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:19:09.627Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nEFI/CPER: don't dump the entire memory region\n\nThe current logic at cper_print_fw_err() doesn't check if the\nerror record length is big enough to handle offset. On a bad firmware,\nif the ofset is above the actual record, length -= offset will\nunderflow, making it dump the entire memory.\n\nThe end result can be:\n\n - the logic taking a lot of time dumping large regions of memory;\n - data disclosure due to the memory dumps;\n - an OOPS, if it tries to dump an unmapped memory region.\n\nFix it by checking if the section length is too small before doing\na hex dump.\n\n[ rjw: Subject tweaks ]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/efi/cper.c"
                    ],
                    "versions": [
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "02de64ab54b4bb0f1b21bb324aeff3b08612be33",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "0e09b522f2622841389c3b2f9ac4969e35c0809d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "64ae5aaa7ac93c83da456039e8ec747bfa8a7cff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "5a9b1dda8481b82851a655c3bcc5b44879b95334",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "7780c0bad2a3a70a8c0113a33c02f4151d901eb3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "54e131db4cdffd946db890ff33ff2647053fd4f6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3d8c11efd528d56972d44ed0de51c4e11a9a4fa9",
                            "lessThan": "55cc6fe5716f678f06bcb95140882dfa684464ec",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/efi/cper.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.252",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.202",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.165",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.128",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.16",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.6",
                            "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": "5.7",
                                    "versionEndExcluding": "5.10.252"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.15.202"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.1.165"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.6.128"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.18.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/02de64ab54b4bb0f1b21bb324aeff3b08612be33"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e09b522f2622841389c3b2f9ac4969e35c0809d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/64ae5aaa7ac93c83da456039e8ec747bfa8a7cff"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5a9b1dda8481b82851a655c3bcc5b44879b95334"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7780c0bad2a3a70a8c0113a33c02f4151d901eb3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91"
                },
                {
                    "url": "https://git.kernel.org/stable/c/54e131db4cdffd946db890ff33ff2647053fd4f6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/55cc6fe5716f678f06bcb95140882dfa684464ec"
                }
            ],
            "title": "EFI/CPER: don't dump the entire memory region",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}