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CVE-2026-74542

netfs: Fix folio_queue ENOMEM in writeback by adding a mempool

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
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version cd0277ed0c188dd40e7744e89299af7b78831ca4
Version < 3f6d7f8a5416d852648d15a05e895f1195ee8a85
Status affected
Version cd0277ed0c188dd40e7744e89299af7b78831ca4
Version < 1d78d56c43ef3768183e8370e7367b162700e049
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.12
Status affected
Version 0
Version < 6.12
Status unaffected
Version <= 7.1.*
Version 7.1.8
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.052
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/3f6d7f8a5416d852648d15a05e895f1195ee8a85
https://git.kernel.org/stable/c/1d78d56c43ef3768183e8370e7367b162700e049