Bug 2395366 (CVE-2022-50245) - CVE-2022-50245 kernel: rapidio: fix possible UAF when kfifo_alloc() fails
Summary: CVE-2022-50245 kernel: rapidio: fix possible UAF when kfifo_alloc() fails
Keywords:
Status: NEW
Alias: CVE-2022-50245
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-15 15:09 UTC by OSIDB Bzimport
Modified: 2025-11-26 09:04 UTC (History)
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Description OSIDB Bzimport 2025-09-15 15:09:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

rapidio: fix possible UAF when kfifo_alloc() fails

If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free
priv. But priv is still in the chdev->file_list, then list traversal
may cause UAF. This fixes the following smatch warning:

drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list
Comment 1 Jon Moroney 2025-09-15 19:43:48 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091548-CVE-2022-50245-57e4@gregkh/T
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