ghsa-gh2q-9gh5-p9fx
Vulnerability from github
Published
2024-12-02 15:31
Modified
2024-12-11 21:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

ocfs2: uncache inode which has failed entering the group

Syzbot has reported the following BUG:

kernel BUG at fs/ocfs2/uptodate.c:509! ... Call Trace: ? __die_body+0x5f/0xb0 ? die+0x9e/0xc0 ? do_trap+0x15a/0x3a0 ? ocfs2_set_new_buffer_uptodate+0x145/0x160 ? do_error_trap+0x1dc/0x2c0 ? ocfs2_set_new_buffer_uptodate+0x145/0x160 ? __pfx_do_error_trap+0x10/0x10 ? handle_invalid_op+0x34/0x40 ? ocfs2_set_new_buffer_uptodate+0x145/0x160 ? exc_invalid_op+0x38/0x50 ? asm_exc_invalid_op+0x1a/0x20 ? ocfs2_set_new_buffer_uptodate+0x2e/0x160 ? ocfs2_set_new_buffer_uptodate+0x144/0x160 ? ocfs2_set_new_buffer_uptodate+0x145/0x160 ocfs2_group_add+0x39f/0x15a0 ? __pfx_ocfs2_group_add+0x10/0x10 ? __pfx_lock_acquire+0x10/0x10 ? mnt_get_write_access+0x68/0x2b0 ? __pfx_lock_release+0x10/0x10 ? rcu_read_lock_any_held+0xb7/0x160 ? __pfx_rcu_read_lock_any_held+0x10/0x10 ? smack_log+0x123/0x540 ? mnt_get_write_access+0x68/0x2b0 ? mnt_get_write_access+0x68/0x2b0 ? mnt_get_write_access+0x226/0x2b0 ocfs2_ioctl+0x65e/0x7d0 ? __pfx_ocfs2_ioctl+0x10/0x10 ? smack_file_ioctl+0x29e/0x3a0 ? __pfx_smack_file_ioctl+0x10/0x10 ? lockdep_hardirqs_on_prepare+0x43d/0x780 ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 ? __pfx_ocfs2_ioctl+0x10/0x10 __se_sys_ioctl+0xfb/0x170 do_syscall_64+0xf3/0x230 entry_SYSCALL_64_after_hwframe+0x77/0x7f ...

When 'ioctl(OCFS2_IOC_GROUP_ADD, ...)' has failed for the particular inode in 'ocfs2_verify_group_and_input()', corresponding buffer head remains cached and subsequent call to the same 'ioctl()' for the same inode issues the BUG() in 'ocfs2_set_new_buffer_uptodate()' (trying to cache the same buffer head of that inode). Fix this by uncaching the buffer head with 'ocfs2_remove_from_cache()' on error path in 'ocfs2_group_add()'.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-53112"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-02T14:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: uncache inode which has failed entering the group\n\nSyzbot has reported the following BUG:\n\nkernel BUG at fs/ocfs2/uptodate.c:509!\n...\nCall Trace:\n \u003cTASK\u003e\n ? __die_body+0x5f/0xb0\n ? die+0x9e/0xc0\n ? do_trap+0x15a/0x3a0\n ? ocfs2_set_new_buffer_uptodate+0x145/0x160\n ? do_error_trap+0x1dc/0x2c0\n ? ocfs2_set_new_buffer_uptodate+0x145/0x160\n ? __pfx_do_error_trap+0x10/0x10\n ? handle_invalid_op+0x34/0x40\n ? ocfs2_set_new_buffer_uptodate+0x145/0x160\n ? exc_invalid_op+0x38/0x50\n ? asm_exc_invalid_op+0x1a/0x20\n ? ocfs2_set_new_buffer_uptodate+0x2e/0x160\n ? ocfs2_set_new_buffer_uptodate+0x144/0x160\n ? ocfs2_set_new_buffer_uptodate+0x145/0x160\n ocfs2_group_add+0x39f/0x15a0\n ? __pfx_ocfs2_group_add+0x10/0x10\n ? __pfx_lock_acquire+0x10/0x10\n ? mnt_get_write_access+0x68/0x2b0\n ? __pfx_lock_release+0x10/0x10\n ? rcu_read_lock_any_held+0xb7/0x160\n ? __pfx_rcu_read_lock_any_held+0x10/0x10\n ? smack_log+0x123/0x540\n ? mnt_get_write_access+0x68/0x2b0\n ? mnt_get_write_access+0x68/0x2b0\n ? mnt_get_write_access+0x226/0x2b0\n ocfs2_ioctl+0x65e/0x7d0\n ? __pfx_ocfs2_ioctl+0x10/0x10\n ? smack_file_ioctl+0x29e/0x3a0\n ? __pfx_smack_file_ioctl+0x10/0x10\n ? lockdep_hardirqs_on_prepare+0x43d/0x780\n ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10\n ? __pfx_ocfs2_ioctl+0x10/0x10\n __se_sys_ioctl+0xfb/0x170\n do_syscall_64+0xf3/0x230\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n...\n \u003c/TASK\u003e\n\nWhen \u0027ioctl(OCFS2_IOC_GROUP_ADD, ...)\u0027 has failed for the particular\ninode in \u0027ocfs2_verify_group_and_input()\u0027, corresponding buffer head\nremains cached and subsequent call to the same \u0027ioctl()\u0027 for the same\ninode issues the BUG() in \u0027ocfs2_set_new_buffer_uptodate()\u0027 (trying\nto cache the same buffer head of that inode). Fix this by uncaching\nthe buffer head with \u0027ocfs2_remove_from_cache()\u0027 on error path in\n\u0027ocfs2_group_add()\u0027.",
  "id": "GHSA-gh2q-9gh5-p9fx",
  "modified": "2024-12-11T21:31:57Z",
  "published": "2024-12-02T15:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53112"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/620d22598110b0d0cb97a3fcca65fc473ea86e73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/737f34137844d6572ab7d473c998c7f977ff30eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/843dfc804af4b338ead42331dd58081b428ecdf8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac0cfe8ac35cf1be54131b90d114087b558777ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b751c50e19d66cfb7360c0b55cf17b0722252d12"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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