{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "896f97ea95c1d29c0520ee0766b66b7f64cb967c"
            },
            {
              "fixed": "981f339d2905b6a92ef59358158b326493aecac5"
            },
            {
              "fixed": "d1308bd0b24cb1d78fa2747d5fa3e055cc628a48"
            },
            {
              "fixed": "cc2d2b3dbfb0ba57bc027fb7e1121250c50e4000"
            },
            {
              "fixed": "f748e15253833b771acbede14ea98f50831ac289"
            },
            {
              "fixed": "c6ed54dd90698dc0744d669524cc1c122ded8a16"
            },
            {
              "fixed": "c9115f49cf260d24d8b5f2d9a4b63cb31a627bb4"
            },
            {
              "fixed": "67bca5f1d644f4e79b694abd8052a177de81c37f"
            },
            {
              "fixed": "4e0473f1060aa49621d40a113afde24818101d37"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.8.0"
            },
            {
              "fixed": "4.14.316"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "4.15.0"
            },
            {
              "fixed": "4.19.284"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.4.244"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "5.10.181"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.30"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53484.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib: cpu_rmap: Avoid use after free on rmap-\u003eobj array entries\n\nWhen calling irq_set_affinity_notifier() with NULL at the notify\nargument, it will cause freeing of the glue pointer in the\ncorresponding array entry but will leave the pointer in the array. A\nsubsequent call to free_irq_cpu_rmap() will try to free this entry again\nleading to possible use after free.\n\nFix that by setting NULL to the array entry and checking that we have\nnon-zero at the array entry when iterating over the array in\nfree_irq_cpu_rmap().\n\nThe current code does not suffer from this since there are no cases\nwhere irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the\nnotify arg) is called, followed by a call to free_irq_cpu_rmap() so we\ndon't hit and issue. Subsequent patches in this series excersize this\nflow, hence the required fix.",
  "id": "CVE-2023-53484",
  "modified": "2026-07-15T01:49:19.510979134Z",
  "published": "2025-10-01T11:42:52.590Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e0473f1060aa49621d40a113afde24818101d37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67bca5f1d644f4e79b694abd8052a177de81c37f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/981f339d2905b6a92ef59358158b326493aecac5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6ed54dd90698dc0744d669524cc1c122ded8a16"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9115f49cf260d24d8b5f2d9a4b63cb31a627bb4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc2d2b3dbfb0ba57bc027fb7e1121250c50e4000"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1308bd0b24cb1d78fa2747d5fa3e055cc628a48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f748e15253833b771acbede14ea98f50831ac289"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53484.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53484"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "lib: cpu_rmap: Avoid use after free on rmap-\u003eobj array entries"
}