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CVE-2026-46197

drm/amdkfd: validate SVM ioctl nattr against buffer size

HIGH
7.8
CVSS Score
Published: May 28, 2026 at 09:40 AM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: validate SVM ioctl nattr against buffer size Validate nattr field against the buffer size, preventing out-of-bounds buffer access via user-controlled attribute count. (cherry picked from commit 5eca8bfdfa456c3304ca77523718fe24254c172f)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.14 ≤ v < 5.15.2095.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.326.19 ≤ v < 7.0.96.2 ≤ v < 6.6.1406.7 ≤ v < 6.12.9042de677f79999791bee4e21be318c32d90ab62c67.17.1 rc1
Vendor states this is fixed in 045e0ff208f0838a246c10204105126611b267a1 (fixed)
Vendor states this is fixed in 6abd3a4417cb73a7d0db7e25bf11fae1074bdba3 (fixed)
Vendor states this is fixed in 91c6dc5a41695d02dfc6299f106ac38a6c493e52 (fixed)
Vendor states this is fixed in ccd060b5c7cc75ae7e211c250b97c5b6272e7efc (fixed)
Vendor states this is fixed in daa8bc5f83814b55b71d2b5b3a090d57a5219c21 (fixed)
Vendor states this is fixed in db9530a9873a7c85d2266a922589ebcf427fa631 (fixed)
Vendor states this is fixed in fb07a0c9c8419164812e07274947f11b1d92dd61 (fixed)
Vendor states this is fixed in 5.14 (unaffected)
Vendor states this is fixed in 5.15.209 (unaffected)
Vendor states this is fixed in 6.1.175 (unaffected)
Vendor states this is fixed in 6.12.90 (unaffected)
Vendor states this is fixed in 6.18.32 (unaffected)
Vendor states this is fixed in 6.6.140 (unaffected)
Vendor states this is fixed in 7.0.9 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

References (7)

Patch
Source: cverecord
https://git.kernel.org/stable/c/91c6dc5a41695d02dfc6299f106ac38a6c493e52
Patch
Source: cverecord
https://git.kernel.org/stable/c/ccd060b5c7cc75ae7e211c250b97c5b6272e7efc
Patch
Source: cverecord
https://git.kernel.org/stable/c/db9530a9873a7c85d2266a922589ebcf427fa631
Patch
Source: cverecord
https://git.kernel.org/stable/c/6abd3a4417cb73a7d0db7e25bf11fae1074bdba3
Patch
Source: cverecord
https://git.kernel.org/stable/c/045e0ff208f0838a246c10204105126611b267a1
Patch
Source: cverecord
https://git.kernel.org/stable/c/daa8bc5f83814b55b71d2b5b3a090d57a5219c21
Patch
Source: cverecord
https://git.kernel.org/stable/c/fb07a0c9c8419164812e07274947f11b1d92dd61

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787CWE-120

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