{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46276","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.109Z","datePublished":"2026-06-08T15:41:18.672Z","dateUpdated":"2026-06-14T18:05:43.582Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T18:05:43.582Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix zero-size GDS range init on RDNA4\n\nRDNA4 (GFX 12) hardware removes the GDS, GWS, and OA on-chip memory\nresources. The gfx_v12_0 initialisation code correctly leaves\nadev->gds.gds_size, adev->gds.gws_size, and adev->gds.oa_size at\nzero to reflect this.\n\namdgpu_ttm_init() unconditionally calls amdgpu_ttm_init_on_chip() for\neach of these resources regardless of size. When the size is zero,\namdgpu_ttm_init_on_chip() forwards the call to ttm_range_man_init(),\nwhich calls drm_mm_init(mm, 0, 0). drm_mm_init() immediately fires\nDRM_MM_BUG_ON(start + size <= start) -- trivially true when size is\nzero -- crashing the kernel during modprobe of amdgpu on an RX 9070 XT.\n\nGuard against this by returning 0 early from\namdgpu_ttm_init_on_chip() when size_in_page is zero. This skips TTM\nresource manager registration for hardware resources that are absent,\nwithout affecting any other GPU type.\n\nDRM_MM_BUG_ON() only asserts if CONFIG_DRM_DEBUG_MM is enabled in\nthe kernel config.  This is apparently rarely enabled as these chips\nhave been in the market for over a year and this issue was only reported\nnow.\n\nOops-Analysis: http://oops.fenrus.org/reports/bugzilla.korg/221376/report.html\n(cherry picked from commit 5719ce5865279cad4fd5f01011fe037168503f2d)"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"],"versions":[{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"1f5d33e7b0a9a2a140f46e22fb52eede323c5946","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"9bc925759c05feae7dfa9570e77131d54729c8ea","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"36f9602fb22ede69fcc8b422be0cf8105bf655ad","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"be0376affcafa0bbb371bb501579a825eae32281","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"0e21db1a77967bc15df662efdca8ea8a61d124ea","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"30c000a49094ec568c9b51b7421f7a4a3f0b0298","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"3e26c76891ab99fa173e9c501119fbb5c9f4600f","status":"affected","versionType":"git"},{"version":"c832c346cdf9022872655be621880e0f66f4135d","lessThan":"095a8b0ad3c3b5cdc3850d961adb8a8f735220bb","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"],"versions":[{"version":"4.20","status":"affected"},{"version":"0","lessThan":"4.20","status":"unaffected","versionType":"semver"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.86","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.27","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.4","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1f5d33e7b0a9a2a140f46e22fb52eede323c5946"},{"url":"https://git.kernel.org/stable/c/9bc925759c05feae7dfa9570e77131d54729c8ea"},{"url":"https://git.kernel.org/stable/c/36f9602fb22ede69fcc8b422be0cf8105bf655ad"},{"url":"https://git.kernel.org/stable/c/be0376affcafa0bbb371bb501579a825eae32281"},{"url":"https://git.kernel.org/stable/c/0e21db1a77967bc15df662efdca8ea8a61d124ea"},{"url":"https://git.kernel.org/stable/c/30c000a49094ec568c9b51b7421f7a4a3f0b0298"},{"url":"https://git.kernel.org/stable/c/3e26c76891ab99fa173e9c501119fbb5c9f4600f"},{"url":"https://git.kernel.org/stable/c/095a8b0ad3c3b5cdc3850d961adb8a8f735220bb"}],"title":"drm/amdgpu: fix zero-size GDS range init on RDNA4","x_generator":{"engine":"bippy-1.2.0"}}}}