{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "235c67634230b0f9ad8c0185272fed36c892b1c4"
            },
            {
              "fixed": "30bb2ec6695d62f63db4aa6179c4626834ed0cd6"
            },
            {
              "fixed": "183182235f6d53bac62c6c39014738a54a68dfa6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53285.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED\n\n[Why]\ndcn32_validate_bandwidth() wraps dcn32_internal_validate_bw() with\nDC_FP_START()/DC_FP_END(). In x86 non-RT, DC_FP_START takes fpregs_lock(),\nwhich disables local softirqs.\n\nThe DML1 path through dcn32_enable_phantom_plane() calls kvzalloc() to\nallocate ~335 KiB for dc_plane_state. This triggers the vmalloc path,\nwhich calls BUG_ON(in_interrupt()) because it's invoked within the\nFPU-enabled (softirq disabled) region, leading to a kernel crash.\n\n[How]\nWrap the dc_state_create_phantom_plane() call with the\nDC_RUN_WITH_PREEMPTION_ENABLED() macro to allow preemption during\nthis memory allocation.\n\n(cherry picked from commit 885ccbef7b94a8b38f69c4211c679021aa27ad11)",
  "id": "CVE-2026-53285",
  "modified": "2026-07-09T03:51:31.965298233Z",
  "published": "2026-06-26T19:40:46.328Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/183182235f6d53bac62c6c39014738a54a68dfa6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30bb2ec6695d62f63db4aa6179c4626834ed0cd6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53285.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53285"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED"
}