CVE-2026-68418
CVE-2026-68418: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
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Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-68418] Prevent user-triggered null deref on QP create
CVE-2026-68418Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent user-triggered null deref on QP create Previously, the user QP creation path would only attempt to populate iwqp->iwpbl if the user-provided req.user_wqe_bufs field was non-zero. The problem is that iwqp->iwpbl is unconditionally dereferenced later on in irdma_setup_virt_qp. The end result is that a user could send a zero user_wqe_bufs value and trigger a null ptr deref. Fix this by unconditionally calling irdma_get_pbl and bailing if it fails, similar to the CQ and SRQ paths. A local user could exploit this vulnerability by providing a zero value for `user_wqe_bufs` during the creation of a Queue Pair (QP). This action leads to a null pointer dereference, which can cause the system to crash…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux for NVIDIA 26
1 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- To mitigate this issue, prevent the irdma module from loading. See https://access.redhat.com/solutions/41278 for instructions.
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