{"api_version":"1","generated_at":"2026-04-22T16:04:57+00:00","cve":"CVE-2026-23227","urls":{"html":"https://cve.report/CVE-2026-23227","api":"https://cve.report/api/cve/CVE-2026-23227.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23227","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23227"},"summary":{"title":"drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free\n\nExynos Virtual Display driver performs memory alloc/free operations\nwithout lock protection, which easily causes concurrency problem.\n\nFor example, use-after-free can occur in race scenario like this:\n```\n\tCPU0\t\t\t\tCPU1\t\t\t\tCPU2\n\t----\t\t\t\t----\t\t\t\t----\n  vidi_connection_ioctl()\n    if (vidi->connection) // true\n      drm_edid = drm_edid_alloc(); // alloc drm_edid\n      ...\n      ctx->raw_edid = drm_edid;\n      ...\n\t\t\t\t\t\t\t\tdrm_mode_getconnector()\n\t\t\t\t\t\t\t\t  drm_helper_probe_single_connector_modes()\n\t\t\t\t\t\t\t\t    vidi_get_modes()\n\t\t\t\t\t\t\t\t      if (ctx->raw_edid) // true\n\t\t\t\t\t\t\t\t        drm_edid_dup(ctx->raw_edid);\n\t\t\t\t\t\t\t\t          if (!drm_edid) // false\n\t\t\t\t\t\t\t\t          ...\n\t\t\t\tvidi_connection_ioctl()\n\t\t\t\t  if (vidi->connection) // false\n\t\t\t\t    drm_edid_free(ctx->raw_edid); // free drm_edid\n\t\t\t\t    ...\n\t\t\t\t\t\t\t\t          drm_edid_alloc(drm_edid->edid)\n\t\t\t\t\t\t\t\t            kmemdup(edid); // UAF!!\n\t\t\t\t\t\t\t\t            ...\n```\n\nTo prevent these vulns, at least in vidi_context, member variables related\nto memory alloc/free should be protected with ctx->lock.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-02-18 16:22:32","updated_at":"2026-04-18 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the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free\n\nExynos Virtual Display driver performs memory alloc/free operations\nwithout lock protection, which easily causes concurrency problem.\n\nFor example, use-after-free can occur in race scenario like this:\n```\n\tCPU0\t\t\t\tCPU1\t\t\t\tCPU2\n\t----\t\t\t\t----\t\t\t\t----\n  vidi_connection_ioctl()\n    if (vidi->connection) // true\n      drm_edid = drm_edid_alloc(); // alloc drm_edid\n      ...\n      ctx->raw_edid = drm_edid;\n      ...\n\t\t\t\t\t\t\t\tdrm_mode_getconnector()\n\t\t\t\t\t\t\t\t  drm_helper_probe_single_connector_modes()\n\t\t\t\t\t\t\t\t    vidi_get_modes()\n\t\t\t\t\t\t\t\t      if (ctx->raw_edid) // true\n\t\t\t\t\t\t\t\t        drm_edid_dup(ctx->raw_edid);\n\t\t\t\t\t\t\t\t          if (!drm_edid) // false\n\t\t\t\t\t\t\t\t          ...\n\t\t\t\tvidi_connection_ioctl()\n\t\t\t\t  if (vidi->connection) // false\n\t\t\t\t    drm_edid_free(ctx->raw_edid); // free drm_edid\n\t\t\t\t    ...\n\t\t\t\t\t\t\t\t          drm_edid_alloc(drm_edid->edid)\n\t\t\t\t\t\t\t\t            kmemdup(edid); // UAF!!\n\t\t\t\t\t\t\t\t            ...\n```\n\nTo prevent these vulns, at least in vidi_context, member variables related\nto memory alloc/free should be protected with ctx->lock."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-04-18T08:57:24.022Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/56966a4cfa925ec24edb68ab652a740a7abe2c4d"},{"url":"https://git.kernel.org/stable/c/9e1ef9396a1899925911b1729cb65665420268df"},{"url":"https://git.kernel.org/stable/c/92dd1f38d7db75374dcdaf54f1d79d67bffd54e5"},{"url":"https://git.kernel.org/stable/c/1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13"},{"url":"https://git.kernel.org/stable/c/abfdf449fb3d7b42e85a1ad1c8694b768b1582f4"},{"url":"https://git.kernel.org/stable/c/60b75407c172e1f341a8a5097c5cbc97dbbdd893"},{"url":"https://git.kernel.org/stable/c/0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385"},{"url":"https://git.kernel.org/stable/c/52b330799e2d6f825ae2bb74662ec1b10eb954bb"}],"title":"drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23227","datePublished":"2026-02-18T14:53:30.784Z","dateReserved":"2026-01-13T15:37:45.987Z","dateUpdated":"2026-04-18T08:57:24.022Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-02-18 16:22:32","lastModifiedDate":"2026-04-18 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vidi: use ctx->lock to protect struct vidi_context m","CVE":"CVE-2026-23227","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23227","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free\n\nExynos Virtual Display driver performs memory alloc/free operations\nwithout lock protection, which easily causes concurrency problem.\n\nFor example, use-after-free can occur in race scenario like this:\n```\n\tCPU0\t\t\t\tCPU1\t\t\t\tCPU2\n\t----\t\t\t\t----\t\t\t\t----\n  vidi_connection_ioctl()\n    if (vidi->connection) // true\n      drm_edid = drm_edid_alloc(); // alloc drm_edid\n      ...\n      ctx->raw_edid = drm_edid;\n      ...\n\t\t\t\t\t\t\t\tdrm_mode_getconnector()\n\t\t\t\t\t\t\t\t  drm_helper_probe_single_connector_modes()\n\t\t\t\t\t\t\t\t    vidi_get_modes()\n\t\t\t\t\t\t\t\t      if (ctx->raw_edid) // true\n\t\t\t\t\t\t\t\t        drm_edid_dup(ctx->raw_edid);\n\t\t\t\t\t\t\t\t          if (!drm_edid) // false\n\t\t\t\t\t\t\t\t          ...\n\t\t\t\tvidi_connection_ioctl()\n\t\t\t\t  if (vidi->connection) // false\n\t\t\t\t    drm_edid_free(ctx->raw_edid); // free drm_edid\n\t\t\t\t    ...\n\t\t\t\t\t\t\t\t          drm_edid_alloc(drm_edid->edid)\n\t\t\t\t\t\t\t\t            kmemdup(edid); // UAF!!\n\t\t\t\t\t\t\t\t            ...\n```\n\nTo prevent these vulns, at least in vidi_context, member variables related\nto memory alloc/free should be protected with ctx->lock.","Type":"Description","Title":"drm/exynos: vidi: use ctx->lock to protect struct vidi_context m"}]}}}