CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: dlm: fix add msg handle in send_queue ordered In a benchmark scenario triggering a lot of requests that triggers a lot of DLM messages on the network it can be that the mh->seq is not ordered according the oldest seq number. This ordering is required by dlm_receive_ack as "before(mh->seq, seq)" will stop to check for older sequence numbers that are ordered in the tail of "node->send_queue". The side effects of not having it correct ordered regarding "before(mh->seq, seq)" are refcounting issues and use-after free. I only was able to reproduce this issue in a experimental DLM branch and a user space DLM benchmark that uses io_uring. After changing this I don't experienced any refcounting with the sending buffer issues anymore.
Засегнати продукти
- Linux Linux: 489d8e559c6596eb08e16447d9830bc39afbe54e преди 482606fea302d8bab86901d7426c3716980d99a8; 489d8e559c6596eb08e16447d9830bc39afbe54e преди ae9e534e502a0f48c12baf83608c5de0ff0eab11; 489d8e559c6596eb08e16447d9830bc39afbe54e преди 6369619f1b665f12d8c99cc6ff733c64eb08b22e; 489d8e559c6596eb08e16447d9830bc39afbe54e преди 712714f818d83373847874ab0f8e426be79296cf; 489d8e559c6596eb08e16447d9830bc39afbe54e преди 4d45250b1d22960f86d83245be188b16e456218b; 489d8e559c6596eb08e16447d9830bc39afbe54e преди d2248cb70c070f8f04762872772e155b59016f17
- Linux Linux: 5.14; преди 5.14; 6.1.191 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-74401
- https://nvd.nist.gov/vuln/detail/CVE-2026-74401
- https://git.kernel.org/stable/c/482606fea302d8bab86901d7426c3716980d99a8
- https://git.kernel.org/stable/c/ae9e534e502a0f48c12baf83608c5de0ff0eab11
- https://git.kernel.org/stable/c/6369619f1b665f12d8c99cc6ff733c64eb08b22e
- https://git.kernel.org/stable/c/712714f818d83373847874ab0f8e426be79296cf
- https://git.kernel.org/stable/c/4d45250b1d22960f86d83245be188b16e456218b
- https://git.kernel.org/stable/c/d2248cb70c070f8f04762872772e155b59016f17