Description
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix folio_queue ENOMEM in writeback by adding a mempool Fix the handling of folio_queue allocation failure in writeback by adding a mempool and passing in gfp_t flags to the rolling buffer functions that allocate memory, using the mempool if gfp != GFP_KERNEL. This is then extended upwards and the gfp to be used for a request is stored in the netfs_io_request struct and is then used for both requests and subrequests, eliminating the sleeping loops there. The failure caused: folio != NULL WARNING: fs/netfs/write_issue.c:603 at netfs_writepages+0x883/0xa10 fs/netfs/write_issue.c:603, CPU#3: syz.0.17/5919
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
cd0277ed0c188dd40e7744e89299af7b78831ca4 to < b343252d6f536203dd0660f676190dcbf6d2ecdcaffectedcd0277ed0c188dd40e7744e89299af7b78831ca4 to < 15ed8a9b7c63e9171f5139a6aaa1ffb61809861faffectedcd0277ed0c188dd40e7744e89299af7b78831ca4 to < 3f6d7f8a5416d852648d15a05e895f1195ee8a85affectedcd0277ed0c188dd40e7744e89299af7b78831ca4 to < 1d78d56c43ef3768183e8370e7367b162700e049affected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.12.114 to ≤ 6.12.*unaffected6.18.57 to ≤ 6.18.*unaffected7.1.8 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected