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: ring-buffer: Stop remote reader update when page swap fails The remote swap_reader_page callback can return -EBUSY when the writer moves the head before the remote catches it, particularly during an event storm on a small buffer. __rb_get_reader_page_from_remote() currently warns about that failure but continues with the unchanged reader ID and rearranges the local page list as though the swap succeeded. Handle the callback failure as a recoverable error. Report it with pr_warn_ratelimited() and return NULL. Callers already handle a NULL reader page as a failed attempt. This avoids splicing the same page as both the previous and new reader without flooding the log under contention.
Засегнати продукти
- Linux Linux: 2e67fabd8b77c4f482df9b211bca1b495c6c2c24 преди a14a97048e48471e283d76879b83d2ae323e0722; 2e67fabd8b77c4f482df9b211bca1b495c6c2c24 преди 5eab74874d11160725c42ab676ba97a797a362eb
- Linux Linux: 7.1; преди 7.1; 7.2.4 до 7.2.*; от 7.3 нататък
История
- 11 септември 2026 Публикувано