ext4: ignore xattrs past end

{
  "id": "7b6c236c206dd172419282616047193b9c19f4d6110c8f55705688456253f234",
  "url": "https://osv.dev/vulnerability/CVE-2025-37738",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ext4: ignore xattrs past end",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ext4: ignore xattrs past end Once inside 'ext4_xattr_inode_dec_ref_all' we should ignore xattrs entries past the 'end' entry. This fixes the following KASAN reported issue: ================================================================== BUG: KASAN: slab-use-after-free in ext4_xattr_inode_dec_ref_all+0xb8c/0xe90 Read of size 4 at addr ffff888012c120c4 by task repro/2065 CPU: 1 UID: 0 PID: 2065 Comm: repro Not tainted 6.13.0-rc2+ #11 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x1fd/0x300 ? tcp_gro_dev_warn+0x260/0x260 ? _printk+0xc0/0x100 ? read_lock_is_recursive+0x10/0x10 ? irq_work_queue+0x72/0xf0 ? __virt_addr_valid+0x17b/0x4b0 print_address_description+0x78/0x390 print_report+0x107/0x1f0 ? __virt_addr_valid+0x17b/0x4b0 ? __virt_addr_valid+0x3ff/0x4b0 ? __phys_addr+0xb5/0x160 ? ext4_xattr_inode_dec_ref_all+0xb8c/0xe90 kasan_report+0xcc/0x100 ? ext4_xattr_inode_dec_ref_all+0xb8c/0xe90 ext4_xattr_inode_dec_ref_all+0xb8c/0xe90 ? ext4_xattr_delete_inode+0xd30/0xd30 ? __ext4_journal_ensure_credits+0x5f0/0x5f0 ? __ext4_journal_ensure_credits+0x2b/0x5f0 ? inode_update_timestamps+0x410/0x410 ext4_xattr_delete_inode+0xb64/0xd30 ? ext4_truncate+0xb70/0xdc0 ? ext4_expand_extra_isize_ea+0x1d20/0x1d20 ? __ext4_mark_inode_dirty+0x670/0x670 ? ext4_journal_check_start+0x16f/0x240 ? ext4_inode_is_fast_symlink+0x2f2/0x3a0 ext4_",
    "evidence": "osv:CVE-2025-37738",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.293",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.237",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.181",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.135",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.88",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.24",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.12",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.14.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-37738",
      "aliases": [
        "CVE-2025-37738"
      ],
      "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": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                {
                  "fixed": "76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3"
                },
                {
                  "fixed": "f737418b6de31c962c7192777ee4018906975383"
                },
                {
                  "fixed": "cf9291a3449b04688b81e32621e88de8f4314b54"
                },
                {
                  "fixed": "362a90cecd36e8a5c415966d0b75b04a0270e4dd"
                },
                {
                  "fixed": "eb59cc31b6ea076021d14b04e7faab1636b87d0e"
                },
                {
                  "fixed": "3bc6317033f365ce578eb6039445fb66162722fd"
                },
                {
                  "fixed": "836e625b03a666cf93ff5be328c8cb30336db872"
                },
                {
                  "fixed": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd"
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            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37738.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "4.13.0"
                },
                {
                  "fixed": "5.4.293"
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              ]
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                  "introduced": "5.11.0"
                },
                {
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              ]
            },
            {
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              "events": [
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                  "introduced": "5.16.0"
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              ]
            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.2.0"
                },
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              ]
            },
            {
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37738.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.248757154Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/362a90cecd36e8a5c415966d0b75b04a0270e4dd",
        "https://git.kernel.org/stable/c/3bc6317033f365ce578eb6039445fb66162722fd",
        "https://git.kernel.org/stable/c/6aff941cb0f7d0c897c3698ad2e30672709135e3",
        "https://git.kernel.org/stable/c/76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3",
        "https://git.kernel.org/stable/c/836e625b03a666cf93ff5be328c8cb30336db872",
        "https://git.kernel.org/stable/c/c8e008b60492cf6fd31ef127aea6d02fd3d314cd",
        "https://git.kernel.org/stable/c/cf9291a3449b04688b81e32621e88de8f4314b54",
        "https://git.kernel.org/stable/c/eb59cc31b6ea076021d14b04e7faab1636b87d0e",
        "https://git.kernel.org/stable/c/f737418b6de31c962c7192777ee4018906975383",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37738.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-37738",
        "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/2025/37xxx/CVE-2025-37738.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-37738",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521995,
  "published_at": "2025-05-01T12:55:47.981+00:00"
}