CVE-2025-38545: net: ethernet: ti: am65-cpsw-nuss: Fix skb size by accounting for skb_shared_info

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-16 · updated 2026-07-30
Weakness: CWE-401

Description

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.

Affected products

Linux kernel: from 6.10 before 6.12.39; from 6.13 before 6.15.7; 6.16-rc1, 6.16-rc2, 6.16-rc3, 6.16-rc4, 6.16-rc5 — fixed in 6.12.39, 6.15.7

How to fix

Upgrade to a fixed version: Linux kernel 6.12.39, 6.15.7. Check the vendor advisory for mitigations.

References

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