{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3bd04fe7d807bbdcfe75b29ca82fae4e2d7dc524"
            },
            {
              "fixed": "8eb6dc76eeae5302c0d885906a0e469ef9630a59"
            },
            {
              "fixed": "6ccbb613b42a1f1ba7bfd547a148f644a902a25c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "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-2026-53278.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Check whether the config array is allocated before destroying it\n\n__destroy_component_cfg() is called to free the configuration array.\nIt uses the embedded 'garbage' structure, which means the array has\nto be allocated.\n\nIf __destroy_component_cfg() is called from mpam_disable() before the\nconfiguration was ever allocated, then a NULL pointer is dereferenced.\n\nCheck for this case and return early if the configuration is not\nallocated.\n\n__destroy_component_cfg() also frees the mbwu_state as this is allocated\nby __allocate_component_cfg(). As the mbwu_state is allocated after\ncomp-\u003ecfg is set, and is also under mpam_list_lock, only the first\npointer needs checking.",
  "id": "CVE-2026-53278",
  "modified": "2026-07-09T03:51:33.120920289Z",
  "published": "2026-06-26T19:40:40.694Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ccbb613b42a1f1ba7bfd547a148f644a902a25c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8eb6dc76eeae5302c0d885906a0e469ef9630a59"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53278.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53278"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "arm_mpam: Check whether the config array is allocated before destroying it"
}