CVE-2026-53355
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
Vulnerability in the Linux kernel in the RDS IB driver. During failed connection setup (rds_ib_setup_qp), the i_sends pointer is not cleared after memory free, potentially leading to use-after-free on subsequent shutdown.
Risk Assessment
Risk of system crash or potential code execution in kernel context, potentially leading to server instability.
Recommendation
Apply the Linux kernel patch fixing the RDS IB issue. Update the kernel to a version containing the fix.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net: rds: clear i_sends on setup unwind The RDS IB connection teardown path is written so it can run during partial startup and on repeated shutdown attempts. It uses NULL pointers to distinguish resources that are still owned from resources that have already been released. When rds_ib_setup_qp() fails after allocating i_sends but before allocating i_recvs, the sends_out path frees i_sends without clearing the pointer. A later shutdown pass can still treat that stale pointer as a live send ring allocation. Clear i_sends after vfree() in the error unwind path so the existing shutdown logic continues to use the correct ownership state.