Vulnerability in DPDK GSO Library Affects Packet Processing
CVE-2026-100236

8.6HIGH

Key Information:

Vendor

Red Hat
Status
Fast Datapath For Rhel 10
Fast Datapath For Rhel 8
Fast Datapath For Rhel 9
Red Hat Enterprise Linux 10
Vendor
CVE Published:
14 October 2026

What is CVE-2026-100236?

A flaw in the DPDK GSO library allows for potential out-of-bounds read and write vulnerabilities during packet header processing. Specifically, when software GSO attempts to copy packet headers into a new mbuf, it fails to validate that the header fits within both the source's first segment and the destination buffer. If a packet, either remote or supplied by a guest, exceeds the configured GSO segment size, it can lead to an unsafe memory operation, resulting in unpredictable behavior or exploitation. It is crucial for users to apply the latest security patches to mitigate this risk.

References

https://access.redhat.com/security/cve/CVE-2026-100236
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2541488
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Alexandru-Ionut Jipa for reporting this issue.
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