DEBIAN-CVE-2026-98365

In the Linux kernel, the following vulnerability has been resolved:  RDMA/rxe: Fix integer overflow in mrcheckrange() leading to OOB access  mrcheckrange() validates that [iova, iova+length) falls within the registered MR range using wraparound-prone arithmetic:      if (iova < mr->ibmr.iova ||         iova + length > mr->ibmr.iova + mr->ibmr.length)  A remote peer can craft an RDMA-Write/Read RETH so that iova + length wraps to 0 (e.g. iova=0xfffffffffffffff8, length=8), bypassing the check. rxemriovatoindex() then computes a huge index (int idx, only guarded by WARNON) and rxemrcopyxarray() dereferences mr->pageinfo[huge], causing an out-of-bounds read/write and a kernel oops that is triggerable by an unauthenticated remote peer.  Rewrite the check in overflow-safe form; the first two clauses guarantee that the subsequent subtractions do not underflow:      if (iova < mr->ibmr.iova ||         length > mr->ibmr.length ||         iova - mr->ibmr.iova > mr->ibmr.length - length)  With the fix, mrcheckrange() returns -EINVAL for the crafted iova and the responder reports REMOTEACCESS_ERROR instead of triggering the OOB.