Local kernel crash via zero-size GDS initialization
Published Jun 8, 2026 · Updated Jun 8, 2026
Denial of service in Linux Kernel affected branches allows local users to crash the kernel while loading amdgpu on RDNA4 systems. amdgpu_ttm_init() passes each absent GDS, GWS, and OA resource to amdgpu_ttm_init_on_chip(), which initializes a zero-length DRM memory range and trips DRM_MM_BUG_ON(). The crash requires RDNA4 hardware and a kernel built with CONFIG_DRM_DEBUG_MM; it occurs during amdgpu module loading and interrupts the host.
Summary
What happened
Denial of service in Linux Kernel affected branches allows local users to crash the kernel while loading amdgpu on RDNA4 systems. amdgpu_ttm_init() passes each absent GDS, GWS, and OA resource to amdgpu_ttm_init_on_chip(), which initializes a zero-length DRM memory range and trips DRM_MM_BUG_ON(). The crash requires RDNA4 hardware and a kernel built with CONFIG_DRM_DEBUG_MM; it occurs during amdgpu module loading and interrupts the host.
The record
- CVE
- CVE-2026-46276
- Published
- Jun 8, 2026
- Updated
- Jun 8, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 8, 2026CVE publishedPublication date reported by the CVE source.
- Jun 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <5.10.258
- Affected versionversion=0 <5.15.209
- Affected versionversion=0 <6.1.175
- Affected versionversion=0 <6.12.86
- Affected versionversion=0 <6.18.27
- Affected versionversion=0 <6.6.140
- Affected versionversion=0 <7.0.4
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <095a8b0ad3c3b5cdc3850d961adb8a8f735220bb
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0e21db1a77967bc15df662efdca8ea8a61d124ea
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1f5d33e7b0a9a2a140f46e22fb52eede323c5946
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <30c000a49094ec568c9b51b7421f7a4a3f0b0298
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <36f9602fb22ede69fcc8b422be0cf8105bf655ad
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3e26c76891ab99fa173e9c501119fbb5c9f4600f
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9bc925759c05feae7dfa9570e77131d54729c8ea
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <be0376affcafa0bbb371bb501579a825eae32281
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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