Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2025-37833
CVE-2025-37833:
Linux Debian vulnerability analysis and mitigation
Overview
A vulnerability in the Linux kernel's network interface unit (NIU) driver has been identified as CVE-2025-37833. The issue affects the MSIX entry data fields handling in the niutrymsix() function, which can cause fatal system traps on SPARC systems. This vulnerability was disclosed on May 8, 2025 (NVD).
Technical details
The vulnerability occurs when registers in MSIX table entries are read before the entries' ENTRYDATA register is written to. This causes a fatal trap on SPARC systems due to improper initialization sequence. The fix involves setting PCIDEVFLAGSMSIXTOUCHENTRYDATAFIRST on the struct pci_dev to work around a hardware or firmware bug. The issue manifests as a non-resumable error that leads to a kernel panic (NVD).
Impact
When triggered, the vulnerability results in a non-resumable error leading to a kernel panic, effectively causing a system crash. This creates a denial of service condition on affected SPARC systems running the Linux kernel (NVD).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through a patch that modifies the niutrymsix() function to properly handle MSIX ENTRYDATA fields. The fix ensures that the ENTRYDATA register is written to before any other registers in the entry are read (NVD).
Additional resources
Source: This report was generated using AI
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