ghsa-c3cx-mm7p-wgj8
Vulnerability from github
Published
2024-10-21 18:30
Modified
2024-11-13 15:31
Details

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

f2fs: fix to don't panic system for no free segment fault injection

f2fs: fix to don't panic system for no free segment fault injection

syzbot reports a f2fs bug as below:

F2FS-fs (loop0): inject no free segment in get_new_segment of __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167 F2FS-fs (loop0): Stopped filesystem due to reason: 7 ------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:2748! CPU: 0 UID: 0 PID: 5109 Comm: syz-executor304 Not tainted 6.11.0-rc6-syzkaller-00363-g89f5e14d05b4 #0 RIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline] RIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836 Call Trace: __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167 f2fs_allocate_new_section fs/f2fs/segment.c:3181 [inline] f2fs_allocate_pinning_section+0xfa/0x4e0 fs/f2fs/segment.c:3195 f2fs_expand_inode_data+0x5d6/0xbb0 fs/f2fs/file.c:1799 f2fs_fallocate+0x448/0x960 fs/f2fs/file.c:1903 vfs_fallocate+0x553/0x6c0 fs/open.c:334 do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline] RIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836

The root cause is when we inject no free segment fault into f2fs, we should not panic system, fix it.

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2024-49887"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to don\u0027t panic system for no free segment fault injection\n\nf2fs: fix to don\u0027t panic system for no free segment fault injection\n\nsyzbot reports a f2fs bug as below:\n\nF2FS-fs (loop0): inject no free segment in get_new_segment of __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167\nF2FS-fs (loop0): Stopped filesystem due to reason: 7\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/segment.c:2748!\nCPU: 0 UID: 0 PID: 5109 Comm: syz-executor304 Not tainted 6.11.0-rc6-syzkaller-00363-g89f5e14d05b4 #0\nRIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline]\nRIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836\nCall Trace:\n __allocate_new_segment+0x1ce/0x940 fs/f2fs/segment.c:3167\n f2fs_allocate_new_section fs/f2fs/segment.c:3181 [inline]\n f2fs_allocate_pinning_section+0xfa/0x4e0 fs/f2fs/segment.c:3195\n f2fs_expand_inode_data+0x5d6/0xbb0 fs/f2fs/file.c:1799\n f2fs_fallocate+0x448/0x960 fs/f2fs/file.c:1903\n vfs_fallocate+0x553/0x6c0 fs/open.c:334\n do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886\n __do_sys_ioctl fs/ioctl.c:905 [inline]\n __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0010:get_new_segment fs/f2fs/segment.c:2748 [inline]\nRIP: 0010:new_curseg+0x1f61/0x1f70 fs/f2fs/segment.c:2836\n\nThe root cause is when we inject no free segment fault into f2fs,\nwe should not panic system, fix it.",
  "id": "GHSA-c3cx-mm7p-wgj8",
  "modified": "2024-11-13T15:31:37Z",
  "published": "2024-10-21T18:30:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49887"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/645ec43760e86d3079fee2e8b51fde7060a540d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65a6ce4726c27b45600303f06496fef46d00b57f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f6e7a0512a57387d36f5e9e9635d6668cac13dd"
    }
  ],
  "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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