Vulnary
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Critical· 9.8official fix available

CVE-2026-53006

A critical flaw in the Linux kernel’s IPv6 handling can let an attacker crash the system or run arbitrary code. The bug is a use‑after‑free in the icmpv6_rcv() function when processing IPv6 packets. It has been fixed in newer kernel releases.

publishedJun 24, 2026
last modifiedJul 28, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
32th 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 26, 2026

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

01

Who is affected

Linux kernel, including Red Hat Enterprise Linux 8.0, 9.0, and 10.0.

02

Real-world impact

An attacker could cause a denial‑of‑service crash or potentially execute code with kernel privileges, leading to full system compromise.

03

Why this severity

The CVSS score of 9.8 reflects the vulnerability’s high impact on confidentiality, integrity, and availability, and the fact that it can be exploited remotely without authentication or user interaction.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade the Linux kernel to a version that includes the fix.
  2. 02Reboot the system to load the updated kernel.

NVD-referenced vendor advisory

05

Timeline

  1. Jun 24, 2026 · Jun 24, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 27, 2026 · 7d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
  3. Jul 28, 2026 · 7d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
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 →