Vulnerability 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
References
- https://git.kernel.org/stable/c/1d78d56c43ef3768183e8370e7367b162700e049
- https://git.kernel.org/stable/c/3f6d7f8a5416d852648d15a05e895f1195ee8a85
FAQ
What is CVE-2026-74542?
CVE-2026-74542 is a documented vulnerability. 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 ...
How severe is CVE-2026-74542?
CVSS scoring is not yet available for CVE-2026-74542. Check NVD for updates.
Is there a patch for CVE-2026-74542?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.