# CVE-2025-71292: linux: In the Linux kernel, the following vulnerability has been resolved:  jfs: nlink overflow in jfs_rename  If nlink is m...

CVE-2025-71292 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-71292, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-71292
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0032
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 6, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  jfs: nlink overflow in jfs_rename  If nlink is maximal for a directory (-1) and inside that directory you perform a rename for some child directory (not moving from the parent), then the nlink of the first directory is first incremented and later decremented. Normally this is fine, but when nlink = -1 this causes a wrap around to 0, and then drop_nlink issues a warning.  After applying the patch syzbot no longer issues any warnings. I also ran some basic fs tests to look for any regressions.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.170-1 | [DEBIAN-CVE-2025-71292](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71292.md) | May 15, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.85-1 | [DEBIAN-CVE-2025-71292](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71292.md) | May 15, 2026 |
| Linux | linux Debian 14 | 6.19.6-1 | [DEBIAN-CVE-2025-71292](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71292.md) | May 15, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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