{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c832c346cdf9022872655be621880e0f66f4135d"
            },
            {
              "fixed": "1f5d33e7b0a9a2a140f46e22fb52eede323c5946"
            },
            {
              "fixed": "9bc925759c05feae7dfa9570e77131d54729c8ea"
            },
            {
              "fixed": "36f9602fb22ede69fcc8b422be0cf8105bf655ad"
            },
            {
              "fixed": "be0376affcafa0bbb371bb501579a825eae32281"
            },
            {
              "fixed": "0e21db1a77967bc15df662efdca8ea8a61d124ea"
            },
            {
              "fixed": "30c000a49094ec568c9b51b7421f7a4a3f0b0298"
            },
            {
              "fixed": "3e26c76891ab99fa173e9c501119fbb5c9f4600f"
            },
            {
              "fixed": "095a8b0ad3c3b5cdc3850d961adb8a8f735220bb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.86"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.27"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46276.json"
  },
  "details": "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-\u003egds.gds_size, adev-\u003egds.gws_size, and adev-\u003egds.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 \u003c= 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)",
  "id": "CVE-2026-46276",
  "modified": "2026-07-15T01:49:00.453532559Z",
  "published": "2026-06-08T15:41:18.672Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/095a8b0ad3c3b5cdc3850d961adb8a8f735220bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e21db1a77967bc15df662efdca8ea8a61d124ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f5d33e7b0a9a2a140f46e22fb52eede323c5946"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30c000a49094ec568c9b51b7421f7a4a3f0b0298"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36f9602fb22ede69fcc8b422be0cf8105bf655ad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e26c76891ab99fa173e9c501119fbb5c9f4600f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9bc925759c05feae7dfa9570e77131d54729c8ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be0376affcafa0bbb371bb501579a825eae32281"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46276.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46276"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "drm/amdgpu: fix zero-size GDS range init on RDNA4"
}