Vulnerability details
CVE-2025-71292
Linux Linux
jfs: nlink overflow in jfs_rename
CVSS 3.1
7.5High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 2.6.12 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < b4330a0d0947fbdc9d445cbbeabd8cc910a8c9ca | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < a3d66089e50a6e0142f8884471f74292102ea9aa | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < f70fcbc2ac7c24f087a2c895c5753aa730b1e479 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 2108829a59f081e822fdab8c2cd7131deb8aa8a1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < fe136426e30ca6debcf916fd6a141555ed9fde74 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 93c325746ae59709b4f9bad4e3e4761c8d566c70 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 9218dc26fd922b09858ecd3666ed57dfd8098da8 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 5d77c36cd4b698649f5c30c5f6c084f4f61d1880 | CVEProject cvelistV5 (CNA) |
References and advisories
8- https://git.kernel.org/stable/c/2108829a59f081e822fdab8c2cd7131deb8aa8a1
- https://git.kernel.org/stable/c/b4330a0d0947fbdc9d445cbbeabd8cc910a8c9ca
- https://git.kernel.org/stable/c/a3d66089e50a6e0142f8884471f74292102ea9aa
- https://git.kernel.org/stable/c/f70fcbc2ac7c24f087a2c895c5753aa730b1e479
- https://git.kernel.org/stable/c/5d77c36cd4b698649f5c30c5f6c084f4f61d1880
- https://git.kernel.org/stable/c/fe136426e30ca6debcf916fd6a141555ed9fde74
- https://git.kernel.org/stable/c/93c325746ae59709b4f9bad4e3e4761c8d566c70
- https://git.kernel.org/stable/c/9218dc26fd922b09858ecd3666ed57dfd8098da8
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Details
- Published
- 2026-05-06
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.32%
Probability of exploitation in 30 days
25.3%
Percentile (among all CVEs)
Weaknesses (CWE)
- —