4.4

CVE-2024-26810

vfio/pci: Lock external INTx masking ops

In the Linux kernel, the following vulnerability has been resolved:

vfio/pci: Lock external INTx masking ops

Mask operations through config space changes to DisINTx may race INTx
configuration changes via ioctl.  Create wrappers that add locking for
paths outside of the core interrupt code.

In particular, irq_type is updated holding igate, therefore testing
is_intx() requires holding igate.  For example clearing DisINTx from
config space can otherwise race changes of the interrupt configuration.

This aligns interfaces which may trigger the INTx eventfd into two
camps, one side serialized by igate and the other only enabled while
INTx is configured.  A subsequent patch introduces synchronization for
the latter flows.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.6 < 5.4.274
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.215
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.154
Linux ≫ Linux Kernel Version >= 5.16 < 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
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.09
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 4.4 0.8 3.6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Third Party Advisory
Mailing List
https://git.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bf
Patch
https://git.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651
Patch
https://git.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42
Patch
https://git.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3
Patch
https://git.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5
Patch
https://git.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40
Patch
https://git.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7
Patch
https://git.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6
Patch
https://cert-portal.siemens.com/productcert/html/ssa-265688.html