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Review reviewHigh

CVE-2025-40250

Linux Linux, RUGGEDCOM RST2428P

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Clean up only new IRQ glue on request_irq() failure The mlx5_irq_alloc() function can inadvertently free the entire rmap and end up in a crash[1] when the other threads tries to access this, when request_irq() fails due to exhausted IRQ vectors. This commit modifies the cleanup to remove only the specific IRQ mapping that was just added. This prevents removal of other valid mappings and ensures precise cleanup of the failed IRQ allocation's associated glue object. Note: This error is observed when both fwctl and r...

CVSS
7.8
EPSS
0.15%
5.05% percentile
CISA KEV
Not listed
Published
2025.12.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.15%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Clean up only new IRQ glue on request_irq() failure The mlx5_irq_alloc() function can inadvertently free the entire rmap and end up in a crash[1] when the other threads tries to access this, when request_irq() fails due to exhausted IRQ vectors. This commit modifies the cleanup to remove only the specific IRQ mapping that was just added. This prevents removal of other valid mappings and ensures precise cleanup of the failed IRQ allocation's associated glue object. Note: This error is observed when both fwctl and r...

Affected product and versions

Product
Linux Linux, RUGGEDCOM RST2428P
Affected versions
>= 3354822cde5a9f72aa725b3c619188b149a71a33 < 69e043bce09c9a77e5f55b9ac7505874a2a1a9f0, >= 3354822cde5a9f72aa725b3c619188b149a71a33 < 6ebd02cf2dde11b86f89ea4c9f55179eab30d4ee, >= 3354822cde5a9f72aa725b3c619188b149a71a33 < 4d6b4bea8b80bfa13c903ba547538249e7c5e977, >= 3354822cde5a9f72aa725b3c619188b149a71a33 < d47515af6cccd7484d8b0870376858c9848a18ec, >= 6.4, < V4.0
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, RUGGEDCOM RST2428P and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2025-40250 — Linux Linux, RUGGEDCOM RST2428P | SECUFOCUS NOW