Bug 2356646 (CVE-2025-21967) - CVE-2025-21967 kernel: ksmbd: fix use-after-free in ksmbd_free_work_struct
Summary: CVE-2025-21967 kernel: ksmbd: fix use-after-free in ksmbd_free_work_struct
Keywords:
Status: NEW
Alias: CVE-2025-21967
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-04-01 16:04 UTC by OSIDB Bzimport
Modified: 2025-04-20 18:12 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-04-01 16:04:13 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in ksmbd_free_work_struct

->interim_entry of ksmbd_work could be deleted after oplock is freed.
We don't need to manage it with linked list. The interim request could be
immediately sent whenever a oplock break wait is needed.
Comment 1 Robb Gatica 2025-04-02 00:57:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025040146-CVE-2025-21967-114e@gregkh/T
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