PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails (Linux Linux)

CVE-2026-45880
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap() doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when trying to remove the PCI device. Fix it by adding the missed percpu_ref_put().

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 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < baa42b756d183a59572f3890981a3d32b8d05d40 ; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < 51b7181cfbedf289ce794b6d97a1c596c309ec38 ; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < e19cce88ec4c4877f4ff2469099b9cf23cc3e93e ; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < a1f4dc72efc3204db95d052058d785cad7ce755f ; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < 6220694c52a5a04102b48109e4f24e958b559bd3
Linux · Linuxaffected 6.2 ; unaffected 0 < 6.2 ; unaffected 6.6.128 ≤ 6.6.* ; unaffected 6.12.75 ≤ 6.12.* ; unaffected 6.18.14 ≤ 6.18.* ; unaffected 6.19.4 ≤ 6.19.*

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