CVE-2026-53047

{"id": "CVE-2026-53047", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "22022cd8851703a58f67615a17bc7e9e8682785b", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "67adde6bfdfd563a54b045d59aeb9a2d90c80697", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "608e1f7bc9d171ab26c1fba288c97fc76363c27d", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "8be69e9245f805566bac68ffc8574b64735fd996", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "5e185330d902b12fe8e6eb4b8514b5d736d8d66d", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "e0e6b14995fd6fa2c0df8c712d76ab32f0694c31", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "ab3f7098a3a27175b91cfc947950f5c26855801b", "versionType": "git"}, {"status": "affected", "version": "f24c4d478013d82bd1b943df566fff3561d52864", "lessThan": "48a428215782321b56956974f23593e40ce84b7a", "versionType": "git"}, {"status": "affected", "version": "95a362c9a6892085f714eb6e31eea6a0e3aa93bf", "versionType": "git"}, {"status": "affected", "version": "4.14.13", "lessThan": "4.15", "versionType": "semver"}], "programFiles": ["drivers/firmware/efi/capsule-loader.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"status": "unaffected", "version": "0", "lessThan": "4.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/firmware/efi/capsule-loader.c"], "defaultStatus": "affected"}]}], "published": "2026-06-24T17:17:16.533", "references": [{"url": "https://git.kernel.org/stable/c/22022cd8851703a58f67615a17bc7e9e8682785b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/48a428215782321b56956974f23593e40ce84b7a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5e185330d902b12fe8e6eb4b8514b5d736d8d66d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/608e1f7bc9d171ab26c1fba288c97fc76363c27d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/67adde6bfdfd563a54b045d59aeb9a2d90c80697", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8be69e9245f805566bac68ffc8574b64735fd996", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ab3f7098a3a27175b91cfc947950f5c26855801b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e0e6b14995fd6fa2c0df8c712d76ab32f0694c31", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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."}], "lastModified": "2026-07-21T17:22:44.967", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4B245EE2-CC73-420B-B573-93C5323D9433", "versionEndExcluding": "4.15", "versionStartIncluding": "4.14.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "025D79B4-921A-41A7-A695-91D339C3ABF1", "versionEndExcluding": "5.10.258", "versionStartIncluding": "4.15.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97A9FFFA-22BB-4D5C-9790-5A2286E392F7", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.15:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3B4D39AF-668B-442B-8085-639A6D4FA5AC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.15:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A282AD0B-2D63-4F05-8F89-109A0975B423"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.15:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "30358221-183C-4699-994E-AF51F5D534FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.15:rc9:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A5ED80A8-E656-4AE9-921B-C22402C94A4C"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}