{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "936b8834366ec05f2a6993f73afd8348cac9718e"
            },
            {
              "fixed": "a35a1c2b170b5b578b1b3fecb95694796552af9a"
            },
            {
              "fixed": "2323084c17370304f49c84b354fe7b3edbb264fe"
            },
            {
              "fixed": "6f702b00b8124c5d3525f19172934544826a114d"
            },
            {
              "fixed": "d919b905939eda93393e3572900ff70dbad2b47f"
            },
            {
              "fixed": "46e66fefb83811958127bc9ad736983ec629d82b"
            },
            {
              "fixed": "2685df8577a38d83b367c8cf52eda9dc286959ff"
            },
            {
              "fixed": "50033ec1350fe68abdc63b950ced7ae57364b77a"
            },
            {
              "fixed": "d12f558e6200b3f47dbef9331ed6d115d2410e59"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.28"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "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-2026-53041.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix listxattr handling when the buffer is full\n\n[BUG]\nIf an OCFS2 inode has both inline and block-based xattrs, listxattr()\ncan return a size larger than the caller's buffer when the inline names\nconsume that buffer exactly.\n\nkernel BUG at mm/usercopy.c:102!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nRIP: 0010:usercopy_abort+0xb7/0xd0 mm/usercopy.c:102\nCall Trace:\n __check_heap_object+0xe3/0x120 mm/slub.c:8243\n check_heap_object mm/usercopy.c:196 [inline]\n __check_object_size mm/usercopy.c:250 [inline]\n __check_object_size+0x5c5/0x780 mm/usercopy.c:215\n check_object_size include/linux/ucopysize.h:22 [inline]\n check_copy_size include/linux/ucopysize.h:59 [inline]\n copy_to_user include/linux/uaccess.h:219 [inline]\n listxattr+0xb0/0x170 fs/xattr.c:926\n filename_listxattr fs/xattr.c:958 [inline]\n path_listxattrat+0x137/0x320 fs/xattr.c:988\n __do_sys_listxattr fs/xattr.c:1001 [inline]\n __se_sys_listxattr fs/xattr.c:998 [inline]\n __x64_sys_listxattr+0x7f/0xd0 fs/xattr.c:998\n ...\n\n[CAUSE]\nCommit 936b8834366e (\"ocfs2: Refactor xattr list and remove\nocfs2_xattr_handler().\") replaced the old per-handler list accounting\nwith ocfs2_xattr_list_entry(), but it kept using size == 0 to detect\nprobe mode.\n\nThat assumption stops being true once ocfs2_listxattr() finishes the\ninline-xattr pass. If the inline names fill the caller buffer exactly,\nthe block-xattr pass runs with a non-NULL buffer and a remaining size of\nzero. ocfs2_xattr_list_entry() then skips the bounds check, keeps\ncounting block names, and returns a positive size larger than the\nsupplied buffer.\n\n[FIX]\nDetect probe mode by testing whether the destination buffer pointer is\nNULL instead of whether the remaining size is zero.\n\nThat restores the pre-refactor behavior and matches the OCFS2 getxattr\nhelpers. Once the remaining buffer reaches zero while more names are\nleft, the block-xattr pass now returns -ERANGE instead of reporting a\nsize larger than the allocated list buffer.",
  "id": "CVE-2026-53041",
  "modified": "2026-07-15T01:48:50.533805992Z",
  "published": "2026-06-24T16:29:47.501Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2323084c17370304f49c84b354fe7b3edbb264fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2685df8577a38d83b367c8cf52eda9dc286959ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46e66fefb83811958127bc9ad736983ec629d82b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50033ec1350fe68abdc63b950ced7ae57364b77a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f702b00b8124c5d3525f19172934544826a114d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a35a1c2b170b5b578b1b3fecb95694796552af9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d12f558e6200b3f47dbef9331ed6d115d2410e59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d919b905939eda93393e3572900ff70dbad2b47f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53041.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53041"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ocfs2: fix listxattr handling when the buffer is full"
}