{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "35e4a69b2003f20a69e7d19ae96ab1eef1aa8e8d"
            },
            {
              "fixed": "3025ca5daa9d682b629c0c958b538e41deeb559d"
            },
            {
              "fixed": "f19d1323aa3dd7ead469aef47d9085f8939565d9"
            },
            {
              "fixed": "a8d51efb5929ae308895455a3e496b5eca2cd143"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4ddf7293928cb619077724b7d828734da8181e6c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.17.8"
            },
            {
              "fixed": "6.18"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "6.18.21"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31567.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPM: sleep: Drop spurious WARN_ON() from pm_restore_gfp_mask()\n\nCommit 35e4a69b2003f (\"PM: sleep: Allow pm_restrict_gfp_mask()\nstacking\") introduced refcount-based GFP mask management that warns\nwhen pm_restore_gfp_mask() is called with saved_gfp_count == 0.\n\nSome hibernation paths call pm_restore_gfp_mask() defensively where\nthe GFP mask may or may not be restricted depending on the execution\npath. For example, the uswsusp interface invokes it in\nSNAPSHOT_CREATE_IMAGE, SNAPSHOT_UNFREEZE, and snapshot_release().\nBefore the stacking change this was a silent no-op; it now triggers\na spurious WARNING.\n\nRemove the WARN_ON() wrapper from the !saved_gfp_count check while\nretaining the check itself, so that defensive calls remain harmless\nwithout producing false warnings.\n\n[ rjw: Subject tweak ]",
  "id": "CVE-2026-31567",
  "modified": "2026-07-15T01:49:19.725658073Z",
  "published": "2026-04-24T14:35:47.453Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3025ca5daa9d682b629c0c958b538e41deeb559d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8d51efb5929ae308895455a3e496b5eca2cd143"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f19d1323aa3dd7ead469aef47d9085f8939565d9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31567.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31567"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "PM: sleep: Drop spurious WARN_ON() from pm_restore_gfp_mask()"
}