CVE-2026-74378

Katalog CVE

CVSS 7.8 · High EPSS 0,14%

Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

15 Agustus 2026

Terakhir diubah

14 September 2026

Status NVD

Received

CVSS 3.1

7.8 (High), sumber CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

EPSS (30 hari)

0,14% peluang dieksploitasi; lebih tinggi dari 3,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/02558c86b6b761063e9399e6b939984500327ef1
• https://git.kernel.org/stable/c/22b8fbded65b8c441b634a185f8da67657df6c50
• https://git.kernel.org/stable/c/3cfa2a3adc51b7c57729961a03446962ff10e3d2
• https://git.kernel.org/stable/c/3e07ea9579dc9553d2285c26c2823931358aa3b8
• https://git.kernel.org/stable/c/b9800d7953d119bcc068c74587d48e4ba0313629
• https://git.kernel.org/stable/c/c8db0e5ab0b6c540214c46c56aaac7cbcb0967fe
• https://git.kernel.org/stable/c/cd19a6345e3727adafafa5954b58b13c92e13b80
• https://git.kernel.org/stable/c/e48daa94ad2d406225b73491fc935064716f0ec7