Bug 2516603 (CVE-2026-72128) - CVE-2026-72128 kernel: nvmet: fix refcount leak in nvmet_sq_create()
Summary: CVE-2026-72128 kernel: nvmet: fix refcount leak in nvmet_sq_create()
Keywords:
Status: NEW
Alias: CVE-2026-72128
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:21 UTC by OSIDB Bzimport
Modified: 2026-08-17 23:07 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 06:21:21 UTC
In the Linux kernel, the following vulnerability has been resolved:

nvmet: fix refcount leak in nvmet_sq_create()

In nvmet_sq_create(), a reference on the ctrl is taken
via kref_get_unless_zero() before calling nvmet_check_sqid().
If nvmet_check_sqid() fails, the function returns the error
directly without releasing the reference, leading to a leak.

Fix this by jumping to the "ctrl_put" label, which already
performs the necessary nvmet_ctrl_put(ctrl). This ensures the
reference is properly released on this error path.


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