fkie_cve-2024-53690
Vulnerability from fkie_nvd
Published
2025-01-11 13:15
Modified
2025-01-11 13:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent use of deleted inode syzbot reported a WARNING in nilfs_rmdir. [1] Because the inode bitmap is corrupted, an inode with an inode number that should exist as a ".nilfs" file was reassigned by nilfs_mkdir for "file0", causing an inode duplication during execution. And this causes an underflow of i_nlink in rmdir operations. The inode is used twice by the same task to unmount and remove directories ".nilfs" and "file0", it trigger warning in nilfs_rmdir. Avoid to this issue, check i_nlink in nilfs_iget(), if it is 0, it means that this inode has been deleted, and iput is executed to reclaim it. [1] WARNING: CPU: 1 PID: 5824 at fs/inode.c:407 drop_nlink+0xc4/0x110 fs/inode.c:407 ... Call Trace: <TASK> nilfs_rmdir+0x1b0/0x250 fs/nilfs2/namei.c:342 vfs_rmdir+0x3a3/0x510 fs/namei.c:4394 do_rmdir+0x3b5/0x580 fs/namei.c:4453 __do_sys_rmdir fs/namei.c:4472 [inline] __se_sys_rmdir fs/namei.c:4470 [inline] __x64_sys_rmdir+0x47/0x50 fs/namei.c:4470 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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/284760b320a0bac411b18108316939707dccb12b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55e4baa0d32f0530ddc64c26620e1f2f8fa2724c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d4ed71327b0b5f3b179a19dc3c06be9509ab3db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/901ce9705fbb9f330ff1f19600e5daf9770b0175
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/912188316a8c9e41b8c1603c2276a05043b14f96
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef942d233643777f7b2a5deef620e82942983143
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff561987ff12b6a3233431ff659b5d332e22f153
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: prevent use of deleted inode\n\nsyzbot reported a WARNING in nilfs_rmdir. [1]\n\nBecause the inode bitmap is corrupted, an inode with an inode number that\nshould exist as a \".nilfs\" file was reassigned by nilfs_mkdir for \"file0\",\ncausing an inode duplication during execution.  And this causes an\nunderflow of i_nlink in rmdir operations.\n\nThe inode is used twice by the same task to unmount and remove directories\n\".nilfs\" and \"file0\", it trigger warning in nilfs_rmdir.\n\nAvoid to this issue, check i_nlink in nilfs_iget(), if it is 0, it means\nthat this inode has been deleted, and iput is executed to reclaim it.\n\n[1]\nWARNING: CPU: 1 PID: 5824 at fs/inode.c:407 drop_nlink+0xc4/0x110 fs/inode.c:407\n...\nCall Trace:\n \u003cTASK\u003e\n nilfs_rmdir+0x1b0/0x250 fs/nilfs2/namei.c:342\n vfs_rmdir+0x3a3/0x510 fs/namei.c:4394\n do_rmdir+0x3b5/0x580 fs/namei.c:4453\n __do_sys_rmdir fs/namei.c:4472 [inline]\n __se_sys_rmdir fs/namei.c:4470 [inline]\n __x64_sys_rmdir+0x47/0x50 fs/namei.c:4470\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"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: evitar el uso de inodo eliminado syzbot inform\u00f3 una ADVERTENCIA en nilfs_rmdir. [1] Debido a que el mapa de bits del inodo est\u00e1 da\u00f1ado, un inodo con un n\u00famero de inodo que deber\u00eda existir como un archivo \".nilfs\" fue reasignado por nilfs_mkdir para \"file0\", lo que provoc\u00f3 una duplicaci\u00f3n de inodo durante la ejecuci\u00f3n. Y esto causa un desbordamiento de i_nlink en operaciones rmdir. El inodo es utilizado dos veces por la misma tarea para desmontar y eliminar los directorios \".nilfs\" y \"file0\", lo que activa una advertencia en nilfs_rmdir. Evite este problema, verifique i_nlink en nilfs_iget(), si es 0, significa que este inodo ha sido eliminado y se ejecuta iput para recuperarlo. [1] ADVERTENCIA: CPU: 1 PID: 5824 en fs/inode.c:407 drop_nlink+0xc4/0x110 fs/inode.c:407 ... Seguimiento de llamadas:  nilfs_rmdir+0x1b0/0x250 fs/nilfs2/namei.c:342 vfs_rmdir+0x3a3/0x510 fs/namei.c:4394 do_rmdir+0x3b5/0x580 fs/namei.c:4453 __do_sys_rmdir fs/namei.c:4472 [en l\u00ednea] __se_sys_rmdir fs/namei.c:4470 [en l\u00ednea] __x64_sys_rmdir+0x47/0x50 fs/namei.c:4470 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f"
    }
  ],
  "id": "CVE-2024-53690",
  "lastModified": "2025-01-11T13:15:26.470",
  "metrics": {},
  "published": "2025-01-11T13:15:26.470",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/284760b320a0bac411b18108316939707dccb12b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/55e4baa0d32f0530ddc64c26620e1f2f8fa2724c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5d4ed71327b0b5f3b179a19dc3c06be9509ab3db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/901ce9705fbb9f330ff1f19600e5daf9770b0175"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/912188316a8c9e41b8c1603c2276a05043b14f96"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ef942d233643777f7b2a5deef620e82942983143"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ff561987ff12b6a3233431ff659b5d332e22f153"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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