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.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix retry exhaustion in simple ring buffer reader swap simple_ring_buffer_swap_reader_page() starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement leaves retry at zero, while a failed replacement leaves it at -1. The current !retry test reverses both outcomes. It returns an error after a successful final replacement, leaving the link update complete but the reader bookkeeping unfinished. After a failed final replacement, it falls through and updates the head and reader pointers as though the replacement succeeded, which can corrupt the ring. Treat only a negative counter as exhaustion and return the documented -EBUSY error.
Засегнати продукти
- Linux Linux: 34e5b958bdad0f9cf16306368bbc2dc5b2a50143 преди df02489aa3aa1834659f0d20c89f7d212047d268; 34e5b958bdad0f9cf16306368bbc2dc5b2a50143 преди e0d3aed7b12cf37b74c7cc5265073d0263b49cde
- Linux Linux: 7.1; преди 7.1; 7.2.4 до 7.2.*; от 7.3 нататък
История
- 11 септември 2026 Публикувано