{ "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" } } } }