CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc The cpu_id attribute supplied by user space through UVERBS_ATTR_ALLOC_DMAH_CPU_ID is passed directly to cpumask_test_cpu() without first verifying that the value is within the valid CPU range. Passing such untrusted data to cpumask_test_cpu() may lead to an out-of-bounds read of the underlying cpumask bitmap: the helper expands to a test_bit() that indexes the bitmap by cpu_id / BITS_PER_LONG with no bound check. In addition, on kernels built with CONFIG_DEBUG_PER_CPU_MAPS it trips the WARN_ON_ONCE() in cpumask_check(); combined with panic_on_warn this turns a bad user input into a machine reboot. Reject any cpu_id that is not smaller than nr_cpu_ids with -EINVAL before it is used. Reported by Smatch.
Засегнати продукти
- Linux Linux: d83edab562a496a42720902a1d2effccd05c37c5 преди bd5e818be7964c1689fba2dad9e6bd3a827fee74; d83edab562a496a42720902a1d2effccd05c37c5 преди 0efbb6b54ff56300867027d8e0800d0e32226a20; d83edab562a496a42720902a1d2effccd05c37c5 преди 323c98a4ff06aa28114f2bf658fb43eb3b536bbc
- Linux Linux: 6.17; преди 6.17; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; 7.1 до *
Вид слабост
История
- 25 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-53187
- https://nvd.nist.gov/vuln/detail/CVE-2026-53187
- https://git.kernel.org/stable/c/bd5e818be7964c1689fba2dad9e6bd3a827fee74
- https://git.kernel.org/stable/c/0efbb6b54ff56300867027d8e0800d0e32226a20
- https://git.kernel.org/stable/c/323c98a4ff06aa28114f2bf658fb43eb3b536bbc