CVE-2026-72496: RDMA/bnxt_re: Proper rollback if the ioremap fails

mediumCVSS 4.1CVE-2026-72496

CSIRTS triage

vendor: Broadcom product: RDMA bnxt_re driver Denial of service

What: Missing proper error rollback when ioremap fails leaves driver in inconsistent state.
Who is affected: Systems using Broadcom RDMA bnxt_re driver with memory mapping failures.
Urgency: Medium severity; incomplete error handling may leave resources in inconsistent state.
Action: Apply patch ensuring proper rollback on ioremap failure in bnxt_re.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 4.1
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72496

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-724960.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-72496	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

criticalCVE-2026-72496: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Proper rollb…nvd

Recent advisories for RDMA/bnxt_re

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-74584: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: zero shared …nvd · 2026-08-22
unknownCVE-2026-72501: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Initialize d…nvd · 2026-08-15
highCVE-2026-72500: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Free SRQ tog…nvd · 2026-08-15
highCVE-2026-72499: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Free CQ togg…nvd · 2026-08-15
unknownCVE-2026-72498: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Avoid displa…nvd · 2026-08-15
highCVE-2026-72497: In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Add a max sl…nvd · 2026-08-15