{"cve":{"cve_id":"CVE-2026-53047","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"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.","published_at":"2026-06-24T16:29:53.491000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/22022cd8851703a58f67615a17bc7e9e8682785b","https://git.kernel.org/stable/c/67adde6bfdfd563a54b045d59aeb9a2d90c80697","https://git.kernel.org/stable/c/608e1f7bc9d171ab26c1fba288c97fc76363c27d","https://git.kernel.org/stable/c/8be69e9245f805566bac68ffc8574b64735fd996","https://git.kernel.org/stable/c/5e185330d902b12fe8e6eb4b8514b5d736d8d66d","https://git.kernel.org/stable/c/e0e6b14995fd6fa2c0df8c712d76ab32f0694c31","https://git.kernel.org/stable/c/ab3f7098a3a27175b91cfc947950f5c26855801b","https://git.kernel.org/stable/c/48a428215782321b56956974f23593e40ce84b7a"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:49.890169Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"4.15","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:4.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"22022cd8851703a58f67615a17bc7e9e8682785b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:22022cd8851703a58f67615a17bc7e9e8682785b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"67adde6bfdfd563a54b045d59aeb9a2d90c80697","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:67adde6bfdfd563a54b045d59aeb9a2d90c80697"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"608e1f7bc9d171ab26c1fba288c97fc76363c27d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:608e1f7bc9d171ab26c1fba288c97fc76363c27d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"8be69e9245f805566bac68ffc8574b64735fd996","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:8be69e9245f805566bac68ffc8574b64735fd996"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"5e185330d902b12fe8e6eb4b8514b5d736d8d66d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:5e185330d902b12fe8e6eb4b8514b5d736d8d66d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"e0e6b14995fd6fa2c0df8c712d76ab32f0694c31","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:e0e6b14995fd6fa2c0df8c712d76ab32f0694c31"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"ab3f7098a3a27175b91cfc947950f5c26855801b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:ab3f7098a3a27175b91cfc947950f5c26855801b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f24c4d478013d82bd1b943df566fff3561d52864","version_start_inclusive":true,"version_end":"48a428215782321b56956974f23593e40ce84b7a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f24c4d478013d82bd1b943df566fff3561d52864:48a428215782321b56956974f23593e40ce84b7a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"95a362c9a6892085f714eb6e31eea6a0e3aa93bf","version_start_inclusive":true,"version_end":"95a362c9a6892085f714eb6e31eea6a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