CVE-2026-98365 Affecting kernel-livepatch-6_4_0-150700_7_81-rt package, versions <1-150700.1.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.38% (32nd percentile)

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  • Snyk IDSNYK-SLES157-KERNELLIVEPATCH640150700781RT-21876233
  • published30 Oct 2026
  • disclosed29 Oct 2026

Introduced: 29 Oct 2026

NewCVE-2026-98365  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-livepatch-6_4_0-150700_7_81-rt to version 1-150700.1.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6_4_0-150700_7_81-rt package and not the kernel-livepatch-6_4_0-150700_7_81-rt package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access

mr_check_range() validates that [iova, iova+length) falls within the registered MR range using wraparound-prone arithmetic:

if (iova &lt; mr-&gt;ibmr.iova ||
    iova + length &gt; mr-&gt;ibmr.iova + mr-&gt;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. rxe_mr_iova_to_index() then computes a huge index (int idx, only guarded by WARN_ON) and rxe_mr_copy_xarray() dereferences mr->page_info[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 &lt; mr-&gt;ibmr.iova ||
    length &gt; mr-&gt;ibmr.length ||
    iova - mr-&gt;ibmr.iova &gt; mr-&gt;ibmr.length - length)

With the fix, mr_check_range() returns -EINVAL for the crafted iova and the responder reports REMOTE_ACCESS_ERROR instead of triggering the OOB.

CVSS Base Scores

version 3.1