vfio/fsl-mc: Block calling interrupt handler without trigger (Linux Linux)

CVE-2024-26814
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.22 % · centile 13 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected cc0ee20bd96971c10eba9a83ecf1c0733078a083 < a563fc18583ca4f42e2fdd0c70c7c618288e7ede ; affected cc0ee20bd96971c10eba9a83ecf1c0733078a083 < 250219c6a556f8c69c5910fca05a59037e24147d ; affected cc0ee20bd96971c10eba9a83ecf1c0733078a083 < 083e750c9f5f4c3bf61161330fb84d7c8e8bb417 ; affected cc0ee20bd96971c10eba9a83ecf1c0733078a083 < ee0bd4ad780dfbb60355b99f25063357ab488267 ; affected cc0ee20bd96971c10eba9a83ecf1c0733078a083 < de87511fb0404d23b6da5f4660383b6ed095e28d ; affected cc0ee20bd96971c10eba9a83ecf1c0733078a083 < 6ec0d88166dac43f29e96801c0927d514f17add9
Linux · Linuxaffected 5.10 ; unaffected 0 < 5.10 ; unaffected 5.10.215 ≤ 5.10.* ; unaffected 5.15.154 ≤ 5.15.* ; unaffected 6.1.84 ≤ 6.1.* ; unaffected 6.6.24 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD