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CVE-2026-90156

ksmbd: safely discard unregistered deferred locks

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: safely discard unregistered deferred locks

When vfs_lock_file() defers a lock, smb2_lock() puts its ksmbd_lock on
rollback_list before allocating and registering the asynchronous work.
If either operation fails, rollback assumes that smb_lock->conn is
initialized and dereferences NULL. The deferred file_lock also remains
linked into the VFS blocked-lock state while it is freed.

Keep the lock off rollback_list until async setup succeeds. On setup
failures, explicitly unblock and wake the deferred lock before freeing it
and its ksmbd wrapper.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9
Version < d09af9a35ff7b77a950b507133d9092aadbfeff4
Status affected
Version e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9
Version < 054bcca4cd9f00719b01f7108b51a2168fb94f15
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.15
Status affected
Version 0
Version < 5.15
Status unaffected
Version <= 7.2.*
Version 7.2.6
Status unaffected
Version <= *
Version 7.3-rc1
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 0.19% 0.089
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/d09af9a35ff7b77a950b507133d9092aadbfeff4
https://git.kernel.org/stable/c/054bcca4cd9f00719b01f7108b51a2168fb94f15