UNKNOWN NVD
CVE-2026-98446
In the Linux kernel, the following vulnerability has been resolved: xfs: don't let hidden_space go negative in xfs_metafile_resv_init LOLLM points out that if
In the Linux kernel, the following vulnerability has been resolved:
xfs: don't let hidden_space go negative in xfs_metafile_resv_init
LOLLM points out that if the amount of fdblocks that we can reserve for
a metadata btree file goes below the space already used by that file,
then the hidden_space subtraction can underflow, causing
xfs_dec_fdblocks to subtract a huge amount of space. We never want the
target to be less than the used sapce, so fix the logic that adjusts
dblocks_avail downwards.
Also fix an error in the adjacent comment.
References
- https://git.kernel.org/stable/c/476582d754cdc5110f806001417fea6c77824c13
- https://git.kernel.org/stable/c/930a9c1c321efdaa3e7f8caecb0479cee3baf342
- https://git.kernel.org/stable/c/f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dc
This unknown severity vulnerability was published on 2026-10-18 via NVD.
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