nilfs2: prevent use of deleted inode
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
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
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.30 and later | 5.4.289, 5.10.233, 5.15.176, 6.1.122, 6.6.68, 6.12.7, 6.13 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.30 and later Fixed in 5.4.289, 5.10.233, 5.15.176, 6.1.122, 6.6.68, 6.12.7, 6.13 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.30 to before 5.4.289; 5.5 to before 5.10.233; 5.11 to before 5.15.176; 5.16 to before 6.1.122; 6.2 to before 6.6.68; 6.7 to before 6.12.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:* | 6.13 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* | 6.13 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:* | 6.13 rc3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.30 to before 5.4.289; 5.5 to before 5.10.233; 5.11 to before 5.15.176; 5.16 to before 6.1.122; 6.2 to before 6.6.68; 6.7 to before 6.12.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:* Versions 6.13 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* Versions 6.13 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:* Versions 6.13 rc3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.289, 5.10.233, 5.15.176, 6.1.122, 6.6.68, 6.12.7, 6.13
Vendor assessments
Red Hat
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-53690
- 2026-10-03 Alias added: GHSA-497m-9xj2-rmhf
References
Patch 7
- https://git.kernel.org/stable/c/55e4baa0d32f0530ddc64c26620e1f2f8fa2724c
- https://git.kernel.org/stable/c/5d4ed71327b0b5f3b179a19dc3c06be9509ab3db
- https://git.kernel.org/stable/c/912188316a8c9e41b8c1603c2276a05043b14f96
- https://git.kernel.org/stable/c/ef942d233643777f7b2a5deef620e82942983143
- https://git.kernel.org/stable/c/284760b320a0bac411b18108316939707dccb12b
- https://git.kernel.org/stable/c/ff561987ff12b6a3233431ff659b5d332e22f153
- https://git.kernel.org/stable/c/901ce9705fbb9f330ff1f19600e5daf9770b0175
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Sources
- CVE-2024-53690 · CVE Program
- CVE-2024-53690 · NVD
- FIRST EPSS
- GHSA-497m-9xj2-rmhf · GitHub Advisory Database · CC BY 4.0
- CVE-2024-53690 · Red Hat security data · CC BY 4.0
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