CVE-2026-68447: Linux, грешка в паметта

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size CRIU checkpoint copies the MQD control stack using cp_hqd_cntl_stack_size from hardware without bounding it to the allocated BO region. If the HW field is larger than the queue's control stack allocation, memcpy reads past the BO into adjacent GTT memory and can leak kernel data to userspace. Store the page-aligned control stack BO size in mqd_manager and clamp checkpoint copies and reported checkpoint sizes to min(cp_hqd_cntl_stack_size, mm->ctl_stack_size). Apply the same bound for multi-XCC v9.4.3 checkpoint layout. (cherry picked from commit 6c2abd0ec09e86c6323010673766f76050e28aa3)

Засегнати продукти

• Linux Linux: 3a9822d7bd623be9000cef8101ecf8479fa53f2c преди 1218c6dcec80f886372635e82f3229d5babc37d3; 3a9822d7bd623be9000cef8101ecf8479fa53f2c преди a0d87beb2660a5098b2b0ecdc1e96810a9074ea9; 3a9822d7bd623be9000cef8101ecf8479fa53f2c преди 426ffae6ecc7ec77d32bf8be065c21a1b881b084
• Linux Linux: 5.18; преди 5.18; 6.12.114 до 6.12.*; 7.1.6 до 7.1.*; 7.2 до *

Вид слабост

• CWE-125 Четене извън границите на буфера

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-68447
• https://nvd.nist.gov/vuln/detail/CVE-2026-68447
• https://git.kernel.org/stable/c/1218c6dcec80f886372635e82f3229d5babc37d3
• https://git.kernel.org/stable/c/a0d87beb2660a5098b2b0ecdc1e96810a9074ea9
• https://git.kernel.org/stable/c/426ffae6ecc7ec77d32bf8be065c21a1b881b084