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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1df8d75030b787a9fae270b59b93eef809dd2011 to < 930a9c1c321efdaa3e7f8caecb0479cee3baf342affected1df8d75030b787a9fae270b59b93eef809dd2011 to < f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dcaffected1df8d75030b787a9fae270b59b93eef809dd2011 to < 476582d754cdc5110f806001417fea6c77824c13affected
Linux Linux
Default version status: affected
6.15affected0 to < 6.15unaffected6.18.55 to ≤ 6.18.*unaffected7.2.9 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected