Bug 2388950 (CVE-2025-38545)

Summary: CVE-2025-38545 kernel: net: ethernet: ti: am65-cpsw-nuss: Fix skb size by accounting for skb_shared_info
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-08-16 12:03:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: ethernet: ti: am65-cpsw-nuss: Fix skb size by accounting for skb_shared_info

While transitioning from netdev_alloc_ip_align() to build_skb(), memory
for the "skb_shared_info" member of an "skb" was not allocated. Fix this
by allocating "PAGE_SIZE" as the skb length, accounting for the packet
length, headroom and tailroom, thereby including the required memory space
for skb_shared_info.
Comment 1 Alexander B 2025-08-18 09:00:04 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025081627-CVE-2025-38545-6fc3@gregkh/T