CVE-2026-74396

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74396

Key Details

CVE	CVE-2026-74396
CVSS Score / Version	7.5 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; 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/mlx5: Fix UMR XLT cleanup on ODP populate failure

mlx5r_umr_update_xlt() allocates and DMA maps an XLT buffer with

mlx5r_umr_create_xlt(). The buffer is released by the common cleanup path

through mlx5r_umr_unmap_free_xlt().

After mlx5_odp_populate_xlt() became fallible, its error path returned

directly and skipped that cleanup. This leaks the XLT DMA mapping and

buffer. If the emergency XLT page was used, it also leaves

xlt_emergency_page_mutex locked.

Break out of the loop so execution falls through the existing cleanup path. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74396
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74396

Source

Reference

NVD

CVE