Bug 2396390 (CVE-2023-53400) - CVE-2023-53400 kernel: ALSA: hda: Fix Oops by 9.1 surround channel names
Summary: CVE-2023-53400 kernel: ALSA: hda: Fix Oops by 9.1 surround channel names
Keywords:
Status: NEW
Alias: CVE-2023-53400
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-18 14:02 UTC by OSIDB Bzimport
Modified: 2025-09-18 17:33 UTC (History)
0 users

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Description OSIDB Bzimport 2025-09-18 14:02:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: hda: Fix Oops by 9.1 surround channel names

get_line_out_pfx() may trigger an Oops by overflowing the static array
with more than 8 channels.  This was reported for MacBookPro 12,1 with
Cirrus codec.

As a workaround, extend for the 9.1 channels and also fix the
potential Oops by unifying the code paths accessing the same array
with the proper size check.
Comment 1 Keith Grant 2025-09-18 17:30:29 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53400-2d47@gregkh/T
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