CVE-2024-44970
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
In the Linux kernel's net/mlx5e (SHAMPO), there is an issue with invalid WQ linked list unlink. When all strides in a WQE are consumed, the WQE is unlinked, but CQEs with 0 consumed strides for the same WQE can still arrive, causing a double unlink and list corruption. The fix accepts 0-sized consumed strides without unlinking again.
Risk Assessment
The risk includes kernel data structure corruption, which could lead to system crashes or instability of Mellanox network interfaces.
Recommendation
Apply the kernel patch for the mlx5e driver and update to a kernel version containing this fix.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink When all the strides in a WQE have been consumed, the WQE is unlinked from the WQ linked list (mlx5_wq_ll_pop()). For SHAMPO, it is possible to receive CQEs with 0 consumed strides for the same WQE even after the WQE is fully consumed and unlinked. This triggers an additional unlink for the same wqe which corrupts the linked list. Fix this scenario by accepting 0 sized consumed strides without unlinking the WQE again.