btrfs: free pages on error in btrfs_uring_read_extent()

{
  "id": "8859511be241fef37a249465f28611a96da3fc1d07507ef0042a8c9a9d0eae3b",
  "url": "https://osv.dev/vulnerability/CVE-2026-23423",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "btrfs: free pages on error in btrfs_uring_read_extent()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: free pages on error in btrfs_uring_read_extent() In this function the 'pages' object is never freed in the hopes that it is picked up by btrfs_uring_read_finished() whenever that executes in the future. But that's just the happy path. Along the way previous allocations might have gone wrong, or we might not get -EIOCBQUEUED from btrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a cleanup section that frees all memory allocated by this function without assuming any deferred execution, and this also needs to happen for the 'pages' allocation.",
    "evidence": "osv:CVE-2026-23423",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.17",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-23423",
      "aliases": [
        "CVE-2026-23423"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "34310c442e175f286b4c06ab5caa4e0b267ea31c"
                },
                {
                  "fixed": "d4f210de01eaccac61eee657f676045ef9771d07"
                },
                {
                  "fixed": "628895890b0c9ac9129129e89455da7db95ba343"
                },
                {
                  "fixed": "3f501412f2079ca14bf68a18d80a2b7a823f1f64"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23423.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.17"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23423.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.739919094Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64",
        "https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343",
        "https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23423.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23423",
        "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/2026/23xxx/CVE-2026-23423.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23423",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 509283,
  "published_at": "2026-04-03T13:24:31.966+00:00"
}