CVE-2026-53133

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-53133

Key Details

CVE	CVE-2026-53133
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
Classified as	CWE-681 (Incorrect Conversion between Numeric Types)

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/umem: Fix truncation for block sizes >= 4G

When the iommu is used the linearization of the mapping can give a single

block that is very large split across multiple SG entries.

When __rdma_block_iter_next() reassembles the split SG entries it is

overflowing the 32 bit stack values and computed the wrong DMA addresses

for blocks after the truncation.

Use the right types to hold DMA addresses. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-53133
CVE	https://www.cve.org/CVERecord?id=CVE-2026-53133

Source

Reference

NVD

CVE