🛡️ CVE-2024-53690 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

nilfs2: prevent use of deleted inode

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

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2024-53690 is recorded against 2 packages.

  • kernel (from 6.7.0 up to 6.12.7)
  • linux-kernel

Timeline and source

Published on 11 January 2025 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-53690 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-01-11
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.7.0 6.12.7
linux-kernel — —

References

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