CVE-2026-68257

drm/amdkfd: fix 32-bit overflow in CWSR total size calculation

HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.14 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Received

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix 32-bit overflow in CWSR total size calculation total_cwsr_size was computed in 32-bit before being used as a BO/SVM allocation size. With large ctx_save_restore_area_size and debug_memory_size multiplied by the XCC count, the product can wrap, yielding an undersized CWSR save area that firmware later overruns. Promote total_cwsr_size to u64 and use check_add_overflow()/ check_mul_overflow() in both kfd_queue_acquire_buffers() and kfd_queue_release_buffers(). (cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)

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:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 325aa07165394b8e866ffe9ec1d4c99d9195b2f2 < b88ffe6593607364a8c06a48c6f29e55437cdf8e ; affected d15deafab5d722afb9e2f83c5edcdef9d9d98bd1 < abce3276c57e36c955627307469b9f009057a467 ; affected d15deafab5d722afb9e2f83c5edcdef9d9d98bd1 < 865532d54eb57b660b1cb1b0e1755776ce21b849 ; affected d15deafab5d722afb9e2f83c5edcdef9d9d98bd1 < 2b0386d4293920e690c0e017708f999b93cc729b ; affected 63600103d2ac5c09fdeec5b931b396e4e0efd5d8 ; affected 6.12.59 < 6.12.101
Linux · Linuxaffected 6.18 ; unaffected 0 < 6.18 ; unaffected 6.12.101 ≤ 6.12.* ; unaffected 6.18.42 ≤ 6.18.* ; unaffected 7.1.6 ≤ 7.1.* ; unaffected 7.2 ≤ *

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