AZL-59261
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-59261.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-59261
- Upstream
- Published
- 2024-04-05T09:15:09Z
- Modified
- 2026-04-01T05:19:27.515570Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-27437 affecting package kernel for versions less than 5.15.176.3-3
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
vfio/pci: Disable auto-enable of exclusive INTx IRQ
Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio.
Instead, invert the logic using IRQFNOAUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.
- References