CVE-2026-68480 — Linux Vulnerability Details

What is CVE-2026-68480?

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution. Fixup register state as if the Safe-RET sequence executed successfully by "emulating" it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt.

1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 83 days ago.

Severity and exploitation probability

EPSS (FIRST): 0.2% probability of exploitation in the next 30 days, higher than 13.1% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 0.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-08-06, last modified 2026-08-18

Is CVE-2026-68480 being exploited?

It currently carries a trending score of 22 in the Threadlinqs vulnerability feed.

Affected products and versions

Linux: Linux

How to fix CVE-2026-68480

No vendor patch reference has been recorded for CVE-2026-68480 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-68480

1 tracked threat in the Threadlinqs corpus references CVE-2026-68480, either in the campaign’s CVE list or as an indicator on the campaign record.

TONTOU: Interrupt-Injection Attack Bypasses Spectre v2 (eIBRS/Safe RET) Defenses on Intel and AMD CPUs — HIGH · 2026-08-06

Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10.

Other references

Showing 5 of 9 recorded references.