iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() (Linux Linux)

CVE-2025-21724
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.19 % · centile 9 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() Resolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index() where shifting the constant "1" (of type int) by bitmap->mapped.pgshift (an unsigned long value) could result in undefined behavior. The constant "1" defaults to a 32-bit "int", and when "pgshift" exceeds 31 (e.g., pgshift = 63) the shift operation overflows, as the result cannot be represented in a 32-bit type. To resolve this, the constant is updated to "1UL", promoting it to an unsigned long type to match the operand's type.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < 44d9c94b7a3f29a3e07c4753603a35e9b28842a3 ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < 38ac76fc06bc6826a3e4b12a98efbe98432380a9 ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < d5d33f01b86af44b23eea61ee309e4ef22c0cdfe ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < b1f8453b8ff1ab79a03820ef608256c499769cb6 ; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 < e24c1551059268b37f6f40639883eafb281b8b9c
Linux · Linuxaffected 6.1 ; unaffected 0 < 6.1 ; unaffected 6.1.129 ≤ 6.1.* ; unaffected 6.6.76 ≤ 6.6.* ; unaffected 6.12.13 ≤ 6.12.* ; unaffected 6.13.2 ≤ 6.13.*

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