CVE-2024-27437

תיאור (מקור, אנגלית)

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 IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.

מדדים

CVSS 3.1

5.5 (MEDIUM) מקור הציון: NVD CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-15/10/2026

מוצרים מושפעים

linux: linux kernel; debian: debian linux

קישורים

• https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060 Patch
• https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351 Patch
• https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2 Patch
• https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda Patch
• https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5 Patch
• https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438 Patch
• https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec Patch
• https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43 Patch
• https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060 Patch
• https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351 Patch