Linux Kernel RDMA bnxt_re Driver Memory Corruption Fix

From this webpage screenshot, we can extract the following key information about the vulnerability: 1. Vulnerability Description: - Title: RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages - Description: Fixed a bug occurring during the setup of Level-2 PBL pages. When exceeds 256K, it prevents memory corruption. 2. Reason for Fix: - Issue: The current logic assumes multiple pages, leading to invalid memory access within the PDE. - Fix: Adjusted the logic to ensure only a single contiguous PDE page address is present in the PDE. 3. Fix Details: - Code Changes: Modifications were made in the file . - Changes Made: - Removed handling of MR resources. - Set up Level-2 PBL pages for non-MR resources. 4. Scope of Fix: - File: - Line Range: From -256,22 to +256,9 5. Fix Contributors: - Author: Bhargava Chenna Marreddy - Committer: Greg Kroah-Hartman - Upstream Commit: 6. Fix Status: - Status: Fixed - Link: https://patch-msgid.link/r/1728373302-19530-10-git-send-email-selvin.xavier@broadcom.com 7. Related Patch: - Patch ID: - Subject: RDMA/bnxt_re: Refactor hardware queue memory allocation This information indicates that a bug in setting up Level-2 PBL pages was fixed, preventing memory corruption. The fix was achieved by adjusting the logic to ensure only a single contiguous PDE page address is present in the PDE.

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Linux Kernel RDMA bnxt_re Driver Memory Corruption Fix