What is CVE-2026-53133?

CVE-2026-53133 is a high-severity vulnerability in Linux, classified under Incorrect Conversion between Numeric Types. CVSS score: 7.8/10. Published 2026-06-25.

How severe is CVE-2026-53133?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2026-53133

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…

EPSS: 0.001 (3.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions a808273a495c657e33281b181fd7fcc2bb28f662, 5.2, 0
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-681 — Incorrect Conversion between Numeric Types

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-53133?: CVE-2026-53133 is a high-severity vulnerability in Linux, classified under Incorrect Conversion between Numeric Types. CVSS score: 7.8/10. Published 2026-06-25.
How severe is CVE-2026-53133?: High severity. CVSS v3 base score is 7.8 out of 10.