Vulnary
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Critical· 9.3official fix available

CVE-2026-46316

A critical flaw in the Linux kernel’s virtual interrupt controller can cause memory to be freed incorrectly when multiple processes clear cached interrupt entries at the same time. This can lead to crashes or the execution of malicious code. The kernel has been patched to fix the problem.

publishedJun 9, 2026
last modifiedJul 30, 2026
sourcesNVD
severity · cvss
9.3
critical · how bad it is
exploitation · epss
<1%
36th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 22, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Linux kernel users running versions prior to the fix, including kernel 7.1 and earlier. Typical users are system administrators and developers who run Linux on servers, desktops, or embedded devices.

02

Real-world impact

An attacker who can run code on the affected system could trigger the flaw to cause a crash or execute arbitrary code, potentially leading to denial of service or full system compromise.

03

Why this severity

The CVSS score of 9.3 reflects that the flaw is local, requires no user interaction, and can compromise confidentiality, integrity, and availability. It can be exploited by any local user and can lead to full system compromise.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade your Linux kernel to a version that includes the fix (e.g., 7.1 or later).
  2. 02Reboot the system to load the updated kernel.

NVD-referenced vendor advisory

05

Timeline

  1. Jun 9, 2026 · Jun 9, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 23, 2026 · 12d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
  3. Jul 30, 2026 · 5d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeChanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →