Description
In the Linux kernel, the following vulnerability has been resolved: netfs: zero gaps in read-gaps folio to avoid writing back stale data netfs_read_gaps() leaves gaps around a streaming write's dirty region unread on the server side, so a short/EOF response there left stale folio content that later got written back. Zero it after the read completes, not before: netfs_wait_for_read() returns rreq->transferred once ret >= 0, so build an iterator over the same bvec array the read used, advance past ret, and zero the rest. The dirty region already maps to sink pages in that array rather than the real folio, so this can't touch it, and only the actual shortfall gets zeroed instead of the whole gap upfront.
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
ee4cdf7ba857a894ad1650d6ab77669cbbfa329e to < 512eaf01ffabf4258e945016b50df5aed940b705affectedee4cdf7ba857a894ad1650d6ab77669cbbfa329e to < 2a62fe628a877c249c8286b157ee99d82840d9dcaffectedee4cdf7ba857a894ad1650d6ab77669cbbfa329e to < 8db55c5cd831a786a1a2a2d391aa80354535a353affected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.18.56 to ≤ 6.18.*unaffected7.2.10 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected