Description
In the Linux kernel, the following vulnerability has been resolved: jfs: truncate good inode pages when hard link is 0 The fileset value of the inode copy from the disk by the reproducer is AGGR_RESERVED_I. When executing evict, its hard link number is 0, so its inode pages are not truncated. This causes the bugon to be triggered when executing clear_inode() because nrpages is greater than 0.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/1bb5cdc3e39f0c2b311fcb631258b7e60d3fb0d3 Patch
- git.kernel.org/stable/c/2b1d5ca395a5fb170c3f885cd42c16179f7f54ec Patch
- git.kernel.org/stable/c/2d91b3765cd05016335cd5df5e5c6a29708ec058 Patch
- git.kernel.org/stable/c/34d8e982bac48bdcca7524644a8825a580edce74 Patch
- git.kernel.org/stable/c/5845b926c561b8333cd65169526eec357d7bb449 Patch
- git.kernel.org/stable/c/89fff8e3d6710fc32507b8e19eb5afa9fb79b896 Patch
- git.kernel.org/stable/c/8ed7275910fb7177012619864e04d3008763f3ea Patch
- git.kernel.org/stable/c/b5b471820c33365a8ccd2d463578bf4e47056c2c Patch
- git.kernel.org/stable/c/df3fd8daf278eca365f221749ae5b728e8382a04 Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 8 · as of 8 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.