CVE-2026-100236 Dpdk: dpdk: heap out-of-bounds read/write in gso header copy
A remote attacker can trigger heap out-of-bounds read/write in DPDK GSO via crafted packets, potentially causing code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-100236?
CVE-2026-100236 is a high-severity memory corruption vulnerability in Red Hat Fast Datapath for RHEL 10, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write.
Weakness: CWE-787
Which versions are affected by CVE-2026-100236?
How do I fix CVE-2026-100236?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-100236 being exploited?
There is no known exploitation of CVE-2026-100236 in the wild and no public exploit code.
Sources
Also known as AZL-108339, DEBIAN-CVE-2026-100236, GHSA-62fj-4whq-8247, UBUNTU-CVE-2026-100236.