block: RCU protect disk->conv_zones_bitmap

{
  "id": "2410e290af6b16e7e7688c023a258735d62a17d9e8eb4d4c62816b3db3a819fa",
  "url": "https://osv.dev/vulnerability/CVE-2024-57875",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "block: RCU protect disk->conv_zones_bitmap",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: block: RCU protect disk->conv_zones_bitmap Ensure that a disk revalidation changing the conventional zones bitmap of a disk does not cause invalid memory references when using the disk_zone_is_conv() helper by RCU protecting the disk->conv_zones_bitmap pointer. disk_zone_is_conv() is modified to operate under the RCU read lock and the function disk_set_conv_zones_bitmap() is added to update a disk conv_zones_bitmap pointer using rcu_replace_pointer() with the disk zone_wplugs_lock spinlock held. disk_free_zone_resources() is modified to call disk_update_zone_resources() with a NULL bitmap pointer to free the disk conv_zones_bitmap. disk_set_conv_zones_bitmap() is also used in disk_update_zone_resources() to set the new (revalidated) bitmap and free the old one.",
    "evidence": "osv:CVE-2024-57875",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-57875",
      "aliases": [
        "CVE-2024-57875"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "dd291d77cc90eb6a86e9860ba8e6e38eebd57d12"
                },
                {
                  "fixed": "493326c4f10cc71a42c27fdc97ce112182ee4cbc"
                },
                {
                  "fixed": "d7cb6d7414ea1b33536fa6d11805cb8dceec1f97"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57875.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.10.0"
                },
                {
                  "fixed": "6.12.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57875.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.468653389Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/493326c4f10cc71a42c27fdc97ce112182ee4cbc",
        "https://git.kernel.org/stable/c/d7cb6d7414ea1b33536fa6d11805cb8dceec1f97",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57875.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-57875",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57875.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-57875",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520093,
  "published_at": "2025-01-11T14:49:01.655+00:00"
}