{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "592903cdcbf606a838056bae6d03fc557806c914"
            },
            {
              "fixed": "4df1a45819e50993cb351682a6ae8e7ed2d233a0"
            },
            {
              "fixed": "4f8d5812337871227bb2c98669a87c306a2f86ef"
            },
            {
              "fixed": "5c48fdc4b4623533d86e279f51531a7ba212eb87"
            },
            {
              "fixed": "3f89b61dd504c5b6711de9759e053b082f9abf12"
            },
            {
              "fixed": "bb190628fe5f2a73ba762a9972ba16c5e895f73e"
            },
            {
              "fixed": "c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.31"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.77"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.17"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23271.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix __perf_event_overflow() vs perf_remove_from_context() race\n\nMake sure that __perf_event_overflow() runs with IRQs disabled for all\npossible callchains. Specifically the software events can end up running\nit with only preemption disabled.\n\nThis opens up a race vs perf_event_exit_event() and friends that will go\nand free various things the overflow path expects to be present, like\nthe BPF program.",
  "id": "CVE-2026-23271",
  "modified": "2026-04-01T23:09:50.885521964Z",
  "published": "2026-03-20T08:08:46.711Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23271.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23271"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "perf: Fix __perf_event_overflow() vs perf_remove_from_context() race"
}