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CVE-2026-53047: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: efi/capsule-loader: fix incorrect sizeof in phys array reallocation The krealloc() call for cap_info->phys in __efi_capsule_setup_info() uses sizeof(phys_addr_t *) instead of sizeof(phys_addr_t), which might be causing an undersized allocation. The allocation is also inconsistent with the initial array allocation in efi_capsule_open() that allocates one entry with sizeof(phys_addr_t), and the efi_capsule_write() function that stores phys_addr_t values (not pointers) via page_to_phys(). On 64-bit systems where sizeof(phys_addr_t) == sizeof(phys_addr_t *), this goes unnoticed. On 32-bit systems with PAE where phys_addr_t is 64-bit but pointers are 32-bit, this allocates half the required space, which might lead to a heap buffer overflow when storing physical addresses. This is similar to the bug fixed in commit fccfa646ef36 ("efi/capsule-loader: fix incorrect allocation size") which fixed the same issue at the initial allocation site.

    Засегнати продукти

    • Linux Linux: f24c4d478013d82bd1b943df566fff3561d52864 преди 22022cd8851703a58f67615a17bc7e9e8682785b; f24c4d478013d82bd1b943df566fff3561d52864 преди 67adde6bfdfd563a54b045d59aeb9a2d90c80697; f24c4d478013d82bd1b943df566fff3561d52864 преди 608e1f7bc9d171ab26c1fba288c97fc76363c27d; f24c4d478013d82bd1b943df566fff3561d52864 преди 8be69e9245f805566bac68ffc8574b64735fd996; f24c4d478013d82bd1b943df566fff3561d52864 преди 5e185330d902b12fe8e6eb4b8514b5d736d8d66d; f24c4d478013d82bd1b943df566fff3561d52864 преди e0e6b14995fd6fa2c0df8c712d76ab32f0694c31; f24c4d478013d82bd1b943df566fff3561d52864 преди ab3f7098a3a27175b91cfc947950f5c26855801b; f24c4d478013d82bd1b943df566fff3561d52864 преди 48a428215782321b56956974f23593e40ce84b7a; 95a362c9a6892085f714eb6e31eea6a0e3aa93bf; 4.14.13 преди 4.15
    • Linux Linux: 4.15; преди 4.15; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; 7.1 до *

    История

    • 24 юни 2026 Публикувано

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    CVE-2026-53047: Linux | freedomonline.bg