Bug 2383436 (CVE-2025-38375)

Summary: CVE-2025-38375 kernel: virtio-net: ensure the received length does not exceed allocated size
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-07-25 14:04:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

virtio-net: ensure the received length does not exceed allocated size

In xdp_linearize_page, when reading the following buffers from the ring,
we forget to check the received length with the true allocate size. This
can lead to an out-of-bound read. This commit adds that missing check.
Comment 1 Jon Moroney 2025-07-25 18:25:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072503-CVE-2025-38375-3faa@gregkh/T