scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done() (Linux Linux)

CVE-2026-31464
HIGH 8.1

En bref

Source
NVD
EPSS
EPSS 0.27 % · centile 20 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done() A malicious or compromised VIO server can return a num_written value in the discover targets MAD response that exceeds max_targets. This value is stored directly in vhost->num_targets without validation, and is then used as the loop bound in ibmvfc_alloc_targets() to index into disc_buf[], which is only allocated for max_targets entries. Indices at or beyond max_targets access kernel memory outside the DMA-coherent allocation. The out-of-bounds data is subsequently embedded in Implicit Logout and PLOGI MADs that are sent back to the VIO server, leaking kernel memory. Fix by clamping num_written to max_targets before storing it.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1HIGH 8.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 < d842348f8a00d5b1d7358f207eb34ffcf5b16df3 ; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 < a007246cb6c9ebdc93dafbf63cc2d43d98f402cc ; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 < 394a1cac3c12fdd7d77f19ccfd222ab5ff87ef89 ; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 < 4ed727e35b0ab17d3eeeb1e8023768396e2be161 ; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 < d1466bf991b2343cf2ba8336e440c8faf3cbb780 ; affected 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 < 786f10b1966e485046839f992e89f2c18cbd1983
Linux · Linuxaffected 2.6.27 ; unaffected 0 < 2.6.27 ; unaffected 5.10.253 ≤ 5.10.* ; unaffected 5.15.203 ≤ 5.15.* ; unaffected 6.1.168 ≤ 6.1.* ; unaffected 6.6.131 ≤ 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