iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() (Linux Linux)

CVE-2022-49002
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.25 % · centile 16 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the error path to avoid reference count leak.

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 2e45528930388658603ea24d49cf52867b928d3e < d47bc9d7bcdbb9adc9703513d964b514fee5b0bf ; affected 2e45528930388658603ea24d49cf52867b928d3e < 71c4a621985fc051ab86d3a86c749069a993fcb2 ; affected 2e45528930388658603ea24d49cf52867b928d3e < 876d7bfb89273997056220029ff12b1c2cc4691d ; affected 2e45528930388658603ea24d49cf52867b928d3e < cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f ; affected 2e45528930388658603ea24d49cf52867b928d3e < a5c65cd56aed027f8a97fda8b691caaeb66d115e ; affected 2e45528930388658603ea24d49cf52867b928d3e < bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7
Linux · Linuxaffected 3.15 ; unaffected 0 < 3.15 ; unaffected 4.9.335 ≤ 4.9.* ; unaffected 4.14.301 ≤ 4.14.* ; unaffected 4.19.268 ≤ 4.19.* ; unaffected 5.4.226 ≤ 5.4.*

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