What’s Vulnerable › Vulnerabilities

CVE-2024-46717: net/mlx5e: SHAMPO, Fix incorrect page release

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-18 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: SHAMPO, Fix incorrect page release Under the following conditions: 1) No skb created yet 2) header_size == 0 (no SHAMPO header) 3) header_index + 1 % MLX5E_SHAMPO_WQ_HEADER_PER_PAGE == 0 (this is the last page fragment of a SHAMPO header page) a new skb is formed with a page that is NOT a SHAMPO header page (it is a regular data page). Further down in the same function (mlx5e_handle_rx_cqe_mpwrq_shampo()), a SHAMPO header page from header_index is released. This is wrong and it leads to SHAMPO header pages being released more than once.

Affected products

• Linux kernel: before 6.1.109; from 6.2 before 6.6.50; from 6.7 before 6.10.9 — fixed in 6.1.109, 6.10.9, 6.6.50

How to fix

Upgrade to a fixed version: Linux kernel 6.1.109, 6.10.9, 6.6.50. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/03924d117625ecb10ee3c9b65930bcb2c37ae629
• https://git.kernel.org/stable/c/70bd03b89f20b9bbe51a7f73c4950565a17a45f7
• https://git.kernel.org/stable/c/ae9018e3f61ba5cc1f08a6e51d3c0bef0a79f3ab
• https://git.kernel.org/stable/c/c909ab41df2b09cde919801c7a7b6bb2cc37ea22
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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