Bug 2395857 (CVE-2023-53307)

Summary: CVE-2023-53307 kernel: rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Description OSIDB Bzimport 2025-09-16 17:02:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails

If getting an ID or setting up a work queue in rbd_dev_create() fails,
use-after-free on rbd_dev->rbd_client, rbd_dev->spec and rbd_dev->opts
is triggered in do_rbd_add().  The root cause is that the ownership of
these structures is transfered to rbd_dev prematurely and they all end
up getting freed when rbd_dev_create() calls rbd_dev_free() prior to
returning to do_rbd_add().

Found by Linux Verification Center (linuxtesting.org) with SVACE, an
incomplete patch submitted by Natalia Petrova <n.petrova>.
Comment 1 Jon Moroney 2025-09-16 18:41:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091641-CVE-2023-53307-129b@gregkh/T