CVE-2026-74378

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74378

Key Details

CVE	CVE-2026-74378
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74378
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74378

Source

Reference

NVD

CVE