github - ghsa-c228-4gh7-9r76

ghsa-c228-4gh7-9r76

Vulnerability from github

Published

2024-05-21 18:31

Modified

2024-05-21 18:31

Details

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

f2fs: fix to drop meta_inode's page cache in f2fs_put_super()

syzbot reports a kernel bug as below:

F2FS-fs (loop1): detect filesystem reference count leak during umount, type: 10, count: 1 kernel BUG at fs/f2fs/super.c:1639! CPU: 0 PID: 15451 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-09338-ge0152e7481c6 #0 RIP: 0010:f2fs_put_super+0xce1/0xed0 fs/f2fs/super.c:1639 Call Trace: generic_shutdown_super+0x161/0x3c0 fs/super.c:693 kill_block_super+0x3b/0x70 fs/super.c:1646 kill_f2fs_super+0x2b7/0x3d0 fs/f2fs/super.c:4879 deactivate_locked_super+0x9a/0x170 fs/super.c:481 deactivate_super+0xde/0x100 fs/super.c:514 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254 task_work_run+0x14d/0x240 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd

In f2fs_put_super(), it tries to do sanity check on dirty and IO reference count of f2fs, once there is any reference count leak, it will trigger panic.

The root case is, during f2fs_put_super(), if there is any IO error in f2fs_wait_on_all_pages(), we missed to truncate meta_inode's page cache later, result in panic, fix this case.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52848"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T16:15:21Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to drop meta_inode\u0027s page cache in f2fs_put_super()\n\nsyzbot reports a kernel bug as below:\n\nF2FS-fs (loop1): detect filesystem reference count leak during umount, type: 10, count: 1\nkernel BUG at fs/f2fs/super.c:1639!\nCPU: 0 PID: 15451 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-09338-ge0152e7481c6 #0\nRIP: 0010:f2fs_put_super+0xce1/0xed0 fs/f2fs/super.c:1639\nCall Trace:\n generic_shutdown_super+0x161/0x3c0 fs/super.c:693\n kill_block_super+0x3b/0x70 fs/super.c:1646\n kill_f2fs_super+0x2b7/0x3d0 fs/f2fs/super.c:4879\n deactivate_locked_super+0x9a/0x170 fs/super.c:481\n deactivate_super+0xde/0x100 fs/super.c:514\n cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254\n task_work_run+0x14d/0x240 kernel/task_work.c:179\n resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:171 [inline]\n exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204\n __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]\n syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296\n do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIn f2fs_put_super(), it tries to do sanity check on dirty and IO\nreference count of f2fs, once there is any reference count leak,\nit will trigger panic.\n\nThe root case is, during f2fs_put_super(), if there is any IO error\nin f2fs_wait_on_all_pages(), we missed to truncate meta_inode\u0027s page\ncache later, result in panic, fix this case.",
  "id": "GHSA-c228-4gh7-9r76",
  "modified": "2024-05-21T18:31:22Z",
  "published": "2024-05-21T18:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52848"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10b2a6c0dade67b5a2b2d17fb75c457ea1985fad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4639380bbe66172df329f8b54aa7d2e943f0f64"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb42e1862aa7934c2c21890097ce4993c5e0d192"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2023-52848

Vulnerability from cvelistv5

Published

2024-05-21 15:31

Modified

2024-11-04 14:53

Severity ?

Summary

f2fs: fix to drop meta_inode's page cache in f2fs_put_super()

References

▼	URL	Tags
	https://git.kernel.org/stable/c/eb42e1862aa7934c2c21890097ce4993c5e0d192
	https://git.kernel.org/stable/c/10b2a6c0dade67b5a2b2d17fb75c457ea1985fad
	https://git.kernel.org/stable/c/a4639380bbe66172df329f8b54aa7d2e943f0f64

Impacted products

Vendor

Product

Version

▼

Linux

Version: 20872584b8c0
Version: 20872584b8c0
Version: 20872584b8c0

Linux

Version: 6.5

Show details on NVD website

JSON

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      {
        "metrics": [
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            "other": {
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                "id": "CVE-2023-52848",
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                  {
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                "role": "CISA Coordinator",
                "timestamp": "2024-05-21T17:54:45.651350Z",
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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            "url": "https://git.kernel.org/stable/c/10b2a6c0dade67b5a2b2d17fb75c457ea1985fad"
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        ],
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    ],
    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52848",
    "datePublished": "2024-05-21T15:31:45.196Z",
    "dateReserved": "2024-05-21T15:19:24.255Z",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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