CVE-2026-74542
- Source
- https://cve.org/CVERecord?id=CVE-2026-74542
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74542.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74542
- Downstream
- Published
- 2026-08-15T12:27:52Z
- Modified
- 2026-08-18T03:31:20Z
- Summary
- netfs: Fix folio_queue ENOMEM in writeback by adding a mempool
- Details
-
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 - Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74542.json" }- References
-
- https://git.kernel.org/stable/c/1d78d56c43ef3768183e8370e7367b162700e049
- https://git.kernel.org/stable/c/3f6d7f8a5416d852648d15a05e895f1195ee8a85
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74542.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74542
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git