{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "40d9b043a89e2301e1f97ade055a73ecc28e9afe"
            },
            {
              "fixed": "c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0"
            },
            {
              "fixed": "9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061"
            },
            {
              "fixed": "157727131ce8a52d8d9bc676c372ef82db6436c4"
            },
            {
              "fixed": "bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d"
            },
            {
              "fixed": "4f5484d25f85ad6c989bad5f6a43450cecfcfd28"
            },
            {
              "fixed": "9cc0f8e63e8c34cf43def35cbd305ba711181a1f"
            },
            {
              "fixed": "4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb"
            },
            {
              "fixed": "faaa1e1155833e7d4ce7e3cfaf64c0d636b190db"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.19.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64546.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/edid: fix OOB read in drm_parse_tiled_block()\n\ndrm_parse_tiled_block() casts the DisplayID block to a\nstruct displayid_tiled_block and reads the full fixed layout up to\ntile-\u003etopology_id[7] without checking block-\u003enum_bytes. The DisplayID\niterator only validates the declared payload length, so a crafted EDID\ncan advertise a tiled-display block (tag DATA_BLOCK_TILED_DISPLAY, or\nDATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY for v2.0) with a small num_bytes at\nthe end of a DisplayID extension. The read then runs past the end of the\nexact-sized kmemdup()'d EDID allocation, a heap out-of-bounds read.\n\nReject blocks shorter than the spec's 22-byte tiled payload before\nreading the fixed struct, as drm_parse_vesa_mso_data() already does.\n\n  BUG: KASAN: slab-out-of-bounds in drm_edid_connector_update\n  Read of size 2 at addr ffff888010077700 by task exploit/147\n   dump_stack_lvl (lib/dump_stack.c:94 ...)\n   print_report (mm/kasan/report.c:378 ...)\n   kasan_report (mm/kasan/report.c:595)\n   drm_edid_connector_update (drivers/gpu/drm/drm_edid.c:7581)\n   bochs_connector_helper_get_modes (drivers/gpu/drm/tiny/bochs.c:574)\n   drm_helper_probe_single_connector_modes (drivers/gpu/drm/drm_probe_helper.c:426)\n   status_store (drivers/gpu/drm/drm_sysfs.c:219)\n   ...\n   vfs_write (fs/read_write.c:595 fs/read_write.c:688)\n   ksys_write (fs/read_write.c:740)",
  "id": "CVE-2026-64546",
  "modified": "2026-07-28T03:56:01.055174306Z",
  "published": "2026-07-27T20:10:37.217Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/157727131ce8a52d8d9bc676c372ef82db6436c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f5484d25f85ad6c989bad5f6a43450cecfcfd28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9cc0f8e63e8c34cf43def35cbd305ba711181a1f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faaa1e1155833e7d4ce7e3cfaf64c0d636b190db"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64546.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64546"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "drm/edid: fix OOB read in drm_parse_tiled_block()"
}