{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "83ad6974dd3bf34c080b3c08d36d02ebc3bd6da8"
            },
            {
              "fixed": "bc9aa5fe21c3966c80647ed6574b94b863f23c62"
            },
            {
              "fixed": "30e5f4d0cd0be655c800f10ae3e530391aa6c1b5"
            },
            {
              "fixed": "76f650a76d6a36a4bee79d94db90a0e935a95477"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81015.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86/amd/pmc: Fix LPS0 and debugfs leaks when STB init fails\n\namd_pmc_probe() registers the LPS0 s2idle handler with\nacpi_register_lps0_dev() and creates the driver's debugfs directory before\ncalling amd_stb_s2d_init(), which is the last step in probe that can fail.\n\nWhen amd_stb_s2d_init() fails (for example the S2D telemetry region cannot\nbe ioremapped on a long-running system, or the SMU rejects the S2D setup)\nthe error path only calls pci_dev_put() and returns.  This leaves\namd_pmc_s2idle_dev_ops on the global lps0_s2idle_devops_head list and leaks\nthe debugfs directory, while the devm-managed resources backing the handler\nare torn down.\n\nReloading the module then walks the corrupted list in\nacpi_register_lps0_dev() and hits:\n\n  list_add corruption. next-\u003eprev should be prev, but was NULL.\n  kernel BUG at lib/list_debug.c:29!\n   acpi_register_lps0_dev+0x44/0x80\n   amd_pmc_probe+0x224/0x380 [amd_pmc]\n   platform_probe+0x67/0x90\n\nEven without a reload, the stale registration means the next s2idle\ntransition calls into torn-down driver state.\n\nUnwind the debugfs directory and the LPS0 registration on the\namd_stb_s2d_init() error path.  acpi_unregister_lps0_dev() is safe to call\nunconditionally here: it is guarded on the same conditions as\nacpi_register_lps0_dev(), which is exactly what amd_pmc_remove() already\nrelies on.",
  "id": "CVE-2026-81015",
  "modified": "2026-09-15T03:31:00.554051068Z",
  "published": "2026-09-11T19:43:04.063Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30e5f4d0cd0be655c800f10ae3e530391aa6c1b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76f650a76d6a36a4bee79d94db90a0e935a95477"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc9aa5fe21c3966c80647ed6574b94b863f23c62"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81015.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81015"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "platform/x86/amd/pmc: Fix LPS0 and debugfs leaks when STB init fails"
}