Medium severity5.5NVD Advisory· Published May 6, 2026· Updated May 13, 2026
CVE-2025-71292
CVE-2025-71292
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=2.6.12.1,<5.10.252
- cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc6:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/2108829a59f081e822fdab8c2cd7131deb8aa8a1nvdPatch
- git.kernel.org/stable/c/5d77c36cd4b698649f5c30c5f6c084f4f61d1880nvdPatch
- git.kernel.org/stable/c/9218dc26fd922b09858ecd3666ed57dfd8098da8nvdPatch
- git.kernel.org/stable/c/93c325746ae59709b4f9bad4e3e4761c8d566c70nvdPatch
- git.kernel.org/stable/c/a3d66089e50a6e0142f8884471f74292102ea9aanvdPatch
- git.kernel.org/stable/c/b4330a0d0947fbdc9d445cbbeabd8cc910a8c9canvdPatch
- git.kernel.org/stable/c/f70fcbc2ac7c24f087a2c895c5753aa730b1e479nvdPatch
- git.kernel.org/stable/c/fe136426e30ca6debcf916fd6a141555ed9fde74nvdPatch
News mentions
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