No. CVE-2026-46300

A Linux flaw can let attackers run commands as root

Attack likelihood is EPSS, a daily estimate from FIRST.org of how likely this bug is to be used in attacks in the next 30 days.

The official description

Linux Kernel contains a missing initialization of a variable vulnerability that could allow for unintended modification of page-cache-backed data via failure to preserve the shared-fragment marker during socket buffer coalescing, causing ESP input processing to decrypt shared fragments in place. This vulnerability can be chained with CVE-2026-109618 and CVE-2026-109619 to implant PHP webshells and run commands as root.

Read-only check, change nothing, send nothing anywhere.
Is Linux Kernel (CVE-2026-46300) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-46300. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

Code on GitHub

Repos named after this bug. Some are scanners or write-ups, some are working attack code. Do not run them on a machine you care about.

• 0xBlackash/CVE-2026-46300 · 16 stars
• MadExploits/CVE-2026-46300 · 3 stars
• HORKimhab/CVE-2026-46300 · 2 stars

Sources

• Vendor advisory (git.kernel.org)
• Vendor advisory (git.kernel.org)
• Vendor advisory (git.kernel.org)
• Vendor advisory (git.kernel.org)
• Vendor advisory (git.kernel.org)
• CISA Known Exploited Vulnerabilities catalog
• NVD record