CVE-2025-71267
Description
In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute indicates a zero data size while the driver allocates memory for it. When ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set to zero, it still allocates memory because of al_aligned(0). This creates an inconsistent state where ni->attr_list.size is zero, but ni->attr_list.le is non-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute list exists and enumerates only the primary MFT record. When it finds ATTR_LIST, the code reloads it and restarts the enumeration, repeating indefinitely. The mount operation never completes, hanging the kernel thread. This patch adds validation to ensure that data_size is non-zero before memory allocation. When a zero-sized ATTR_LIST is detected, the function returns -EINVAL, preventing a DoS vulnerability.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | 5.15.202 |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 6.12.85-1 |
| sid | Fixed | 6.19.6-1 |
| forky | Fixed | 6.19.6-1 |
| bullseye | Fixed | 0 |
| bookworm | Fixed | 6.1.170-1 |
References
- https://git.kernel.org/stable/c/06909b2549d631a47fcda249d34be26f7ca1711d
- https://git.kernel.org/stable/c/7ef219656febf5ae06ae56b1fce47ebd05f92b68
- https://git.kernel.org/stable/c/8d8c70b57dbeda3eb165c0940b97e85373ca9354
- https://git.kernel.org/stable/c/9267d99fade76d44d4a133599524031fe684156e
- https://git.kernel.org/stable/c/976e6a7c51fabf150478decbe8ef5d9a26039b7c
- https://git.kernel.org/stable/c/9779a6eaaabdf47aa57910d352b398ad742e6a5f
- https://git.kernel.org/stable/c/fd508939dbca5eceefb2d0c2564beb15469572f2
- https://www.suse.com/security/cve/CVE-2025-71267.html
- https://security-tracker.debian.org/tracker/CVE-2025-71267
CWEs
CWE-835
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.