5.5

CVE-2024-27437

vfio/pci: Disable auto-enable of exclusive INTx IRQ

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.6 < 6.1.84
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.24
Linux ≫ Linux Kernel Version >= 6.7 < 6.7.12
Linux ≫ Linux Kernel Version >= 6.8 < 6.8.3
Linux ≫ Linux Kernel Version >= 6.8.4 <= 6.8.12
Debian ≫ Debian Linux Version10.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.148
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Mailing List
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://cert-portal.siemens.com/productcert/html/ssa-265688.html