CVE-2026-64102
A flaw in the Linux kernel’s RDMA/siw driver allows a malicious peer to send a malformed iWARP packet that causes an integer underflow and a huge memory read. The bug can lead to kernel corruption and potentially arbitrary code execution or denial of service.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Linux kernel users running the RDMA/siw driver (iWARP over TCP).
Real-world impact
An attacker who can connect to a vulnerable RDMA/siw endpoint can craft a packet that triggers a kernel memory read of an arbitrary size, which could be used to gain root privileges or crash the system.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable from the network with no user interaction, no privileges, and can compromise confidentiality, integrity, and availability of the entire system.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- Jul 19, 2026 · 14d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 30, 2026 · 3d agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- git.kernel.org/stable/c/0ce1bc9e46ecabe847…
- git.kernel.org/stable/c/1012896f4225e8f801…
- git.kernel.org/stable/c/14553be882d9ce9174…
- git.kernel.org/stable/c/33a8b5e971e294ec2a…
- git.kernel.org/stable/c/4a331582011d9e8089…
- git.kernel.org/stable/c/683f7cfbf514193d63…
- git.kernel.org/stable/c/775b4dc9618a99a1fa…
- git.kernel.org/stable/c/c7c0c0f4379dedec12…