Bug 2432360 (CVE-2025-71157) - CVE-2025-71157 kernel: RDMA/core: always drop device refcount in ib_del_sub_device_and_put()
Summary: CVE-2025-71157 kernel: RDMA/core: always drop device refcount in ib_del_sub_d...
Keywords:
Status: NEW
Alias: CVE-2025-71157
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-23 15:02 UTC by OSIDB Bzimport
Modified: 2026-01-23 18:40 UTC (History)
0 users

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Description OSIDB Bzimport 2026-01-23 15:02:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/core: always drop device refcount in ib_del_sub_device_and_put()

Since nldev_deldev() (introduced by commit 060c642b2ab8 ("RDMA/nldev: Add
support to add/delete a sub IB device through netlink") grabs a reference
using ib_device_get_by_index() before calling ib_del_sub_device_and_put(),
we need to drop that reference before returning -EOPNOTSUPP error.
Comment 1 Keith Grant 2026-01-23 18:37:03 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026012306-CVE-2025-71157-3a03@gregkh/T
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