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/rxe: Fix TOCTOU heap overflow in get_srq_wqe get_srq_wqe() reads wqe->dma.num_sge from the shared receive queue buffer, which is mapped into userspace. It validates num_sge against max_sge, but then re-reads the same field to calculate the memcpy size. A concurrent userspace thread can modify num_sge between validation and use, causing a heap buffer overflow when copying the WQE into qp->resp.srq_wqe. Read num_sge into a local variable and use it for both the bounds check and the size calculation.
Засегнати продукти
- Linux Linux: 8700e3e7c4857d28ebaa824509934556da0b3e76 преди c8db0e5ab0b6c540214c46c56aaac7cbcb0967fe; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди e48daa94ad2d406225b73491fc935064716f0ec7; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди 3cfa2a3adc51b7c57729961a03446962ff10e3d2; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди cd19a6345e3727adafafa5954b58b13c92e13b80; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди 3e07ea9579dc9553d2285c26c2823931358aa3b8; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди 02558c86b6b761063e9399e6b939984500327ef1; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди b9800d7953d119bcc068c74587d48e4ba0313629; 8700e3e7c4857d28ebaa824509934556da0b3e76 преди 22b8fbded65b8c441b634a185f8da67657df6c50
- Linux Linux: 4.8; преди 4.8; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.178 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-2026-74378
- https://nvd.nist.gov/vuln/detail/CVE-2026-74378
- https://git.kernel.org/stable/c/c8db0e5ab0b6c540214c46c56aaac7cbcb0967fe
- https://git.kernel.org/stable/c/e48daa94ad2d406225b73491fc935064716f0ec7
- https://git.kernel.org/stable/c/3cfa2a3adc51b7c57729961a03446962ff10e3d2
- https://git.kernel.org/stable/c/cd19a6345e3727adafafa5954b58b13c92e13b80
- https://git.kernel.org/stable/c/3e07ea9579dc9553d2285c26c2823931358aa3b8
- https://git.kernel.org/stable/c/02558c86b6b761063e9399e6b939984500327ef1
- https://git.kernel.org/stable/c/b9800d7953d119bcc068c74587d48e4ba0313629
- https://git.kernel.org/stable/c/22b8fbded65b8c441b634a185f8da67657df6c50