What is RHSA-2026:1703?

RHSA-2026:1703 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel security update

Which CVE IDs does RHSA-2026:1703 cover?

RHSA-2026:1703 covers the following CVE IDs: CVE-2025-21863, CVE-2025-40248, CVE-2025-68301. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:1703?

RHSA-2026:1703 has a CVSS v3 base score of 7.1, published by Red Hat Product Security.

RHSA-2026:1703HighCVSS 7.1

Red Hat Security Advisory: kernel security update

Vendor

Red Hat Product Security

Published

February 2, 2026

Last Modified

June 30, 2026

🔗 CVE IDs covered (3)

CVE-2025-21863 →CVE-2025-40248 →CVE-2025-68301 →

📋 Description

CVE-2025-21863 — kernel: io_uring: prevent opcode speculation CVE-2025-40248 — kernel: Linux kernel: vsock vulnerability may lead to memory corruption CVE-2025-68301 — kernel: net: atlantic: fix fragment overflow handling in RX path

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:1703
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2351629
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2418872
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2422836
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_1703.json