CVE-2026-98446 | BDVDB-2026-390776 Detail

Description#

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.

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Exploit#

History#

1. Version 12026-10-18Record published in the CVE List.
2. Version 22026-10-19Most recent update recorded in the CVE List.