CVE-2024-46717
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
In the Linux kernel, the mlx5e driver for SHAMPO has an incorrect page release issue. Under specific conditions (no skb, header_size == 0, last fragment of a header page), a SHAMPO header page is released incorrectly, leading to multiple releases of the same pages.
Risk Assessment
The vulnerability may lead to memory corruption or system crash during packet processing with SHAMPO, potentially affecting network stability.
Recommendation
It is recommended to update the Linux kernel to a version containing the fix that corrects the page release logic in mlx5e_handle_rx_cqe_mpwrq_shampo().
Original NVD description (English source)
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.