{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53047",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.381Z",
        "datePublished": "2026-06-24T16:29:53.491Z",
        "dateUpdated": "2026-06-24T16:29:53.491Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-24T16:29:53.491Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefi/capsule-loader: fix incorrect sizeof in phys array reallocation\n\nThe krealloc() call for cap_info->phys in __efi_capsule_setup_info() uses\nsizeof(phys_addr_t *) instead of sizeof(phys_addr_t), which might be\ncausing an undersized allocation.\n\nThe allocation is also inconsistent with the initial array allocation in\nefi_capsule_open() that allocates one entry with sizeof(phys_addr_t),\nand the efi_capsule_write() function that stores phys_addr_t values (not\npointers) via page_to_phys().\n\nOn 64-bit systems where sizeof(phys_addr_t) == sizeof(phys_addr_t *), this\ngoes unnoticed. On 32-bit systems with PAE where phys_addr_t is 64-bit but\npointers are 32-bit, this allocates half the required space, which might\nlead to a heap buffer overflow when storing physical addresses.\n\nThis is similar to the bug fixed in commit fccfa646ef36 (\"efi/capsule-loader:\nfix incorrect allocation size\") which fixed the same issue at the initial\nallocation site."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/efi/capsule-loader.c"
                    ],
                    "versions": [
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "22022cd8851703a58f67615a17bc7e9e8682785b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "67adde6bfdfd563a54b045d59aeb9a2d90c80697",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "608e1f7bc9d171ab26c1fba288c97fc76363c27d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "8be69e9245f805566bac68ffc8574b64735fd996",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "5e185330d902b12fe8e6eb4b8514b5d736d8d66d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "e0e6b14995fd6fa2c0df8c712d76ab32f0694c31",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "ab3f7098a3a27175b91cfc947950f5c26855801b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f24c4d478013d82bd1b943df566fff3561d52864",
                            "lessThan": "48a428215782321b56956974f23593e40ce84b7a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "95a362c9a6892085f714eb6e31eea6a0e3aa93bf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.14.13",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/efi/capsule-loader.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.141",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.91",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.33",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.10",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "4.15",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "5.15.209"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/22022cd8851703a58f67615a17bc7e9e8682785b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/67adde6bfdfd563a54b045d59aeb9a2d90c80697"
                },
                {
                    "url": "https://git.kernel.org/stable/c/608e1f7bc9d171ab26c1fba288c97fc76363c27d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8be69e9245f805566bac68ffc8574b64735fd996"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5e185330d902b12fe8e6eb4b8514b5d736d8d66d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e0e6b14995fd6fa2c0df8c712d76ab32f0694c31"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ab3f7098a3a27175b91cfc947950f5c26855801b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/48a428215782321b56956974f23593e40ce84b7a"
                }
            ],
            "title": "efi/capsule-loader: fix incorrect sizeof in phys array reallocation",
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}