Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1df8d75030b787a9fae270b59b93eef809dd2011 before 930a9c1c321efdaa3e7f8caecb0479cee3baf342; affected 1df8d75030b787a9fae270b59b93eef809dd2011 before f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dc; affected 1df8d75030b787a9fae270b59b93eef809dd2011 before 476582d754cdc5110f806001417fea6c77824c13 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.18.55 through 6.18.*; unaffected 7.2.9 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.