CVE-2026-53355
A flaw in the Linux kernel’s Remote Datagram Sockets (RDS) implementation could let an attacker corrupt kernel memory during connection teardown. The issue has been fixed in a kernel update. Users should update their kernel to the patched version.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
All Linux systems running kernel versions that contain the vulnerable RDS code, across all major distributions.
Real-world impact
An attacker could potentially gain full control of the affected system, reading, modifying, or crashing kernel memory, leading to complete compromise.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability requires no authentication or user interaction, and it allows an attacker to fully compromise confidentiality, integrity, and availability of the system.
What to do about it
- 01Upgrade your Linux kernel to a version that includes the fix for CVE-2026-53355.
- 02Reboot the system to load the updated kernel.
NVD-referenced vendor advisory
Timeline
- Jul 1, 2026 · Jul 1, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 19, 2026 · 16d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
- Jul 22, 2026 · 12d agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- git.kernel.org/stable/c/1d4ec754ee3871f7e3…patch
- git.kernel.org/stable/c/20cf0fb715c4111146…patch
- git.kernel.org/stable/c/27040bbca289a704ea…patch
- git.kernel.org/stable/c/29d940026dce39e301…patch
- git.kernel.org/stable/c/2c5e5e4a5970c41f16…patch
- git.kernel.org/stable/c/66cccec111421a10ef…patch
- git.kernel.org/stable/c/e7cf30aa5f1fc6c2a8…patch
- git.kernel.org/stable/c/f16ad421a4e3e7db2d…patch