CVE-2024-57936
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
In the Linux kernel, in the RDMA/bnxt_re driver, there is an issue with the maximum number of SGEs for work requests. For Gen P7, 13 SGEs are reported, but the WQE software structure can only hold 6, leading to traffic failures and system crashes.
Risk Assessment
The risk includes RDMA network failures and potential system crashes, which can disrupt applications relying on low-latency communication.
Recommendation
It is recommended to update the Linux kernel to a version containing the fix that uses the appropriate define for the maximum SGE count for variable-size WQEs.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Fix max SGEs for the Work Request Gen P7 supports up to 13 SGEs for now. WQE software structure can hold only 6 now. Since the max send sge is reported as 13, the stack can give requests up to 13 SGEs. This is causing traffic failures and system crashes. Use the define for max SGE supported for variable size. This will work for both static and variable WQEs.