CVE-2023-53400
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2025-12-12

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-09-18
Last Modified
2025-12-12
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53400
Affected Vendors & Products
Showing 9 associated CPEs
Vendor Product Version / Range
linux linux_kernel to 4.14.316 (exc)
linux linux_kernel From 4.15 (inc) to 4.19.284 (exc)
linux linux_kernel From 4.20 (inc) to 5.4.244 (exc)
linux linux_kernel From 5.5 (inc) to 5.10.181 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.113 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.30 (exc)
linux linux_kernel From 6.2 (inc) to 6.3.4 (exc)
linux linux_kernel 6.4
linux linux_kernel 6.4
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CWE ID Description
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Executive Summary

This vulnerability is in the Linux kernel's ALSA sound subsystem, specifically in the hda driver. The function get_line_out_pfx() can cause an Oops (a kernel crash) by overflowing a static array when handling more than 8 audio channels, such as in a 9.1 surround sound setup. This overflow can cause instability or crashes on affected systems like the MacBookPro 12,1 with Cirrus codec. The fix involves extending the array size and unifying code paths with proper size checks to prevent the overflow.

Impact Analysis

This vulnerability can cause the Linux kernel to crash (an Oops) when handling audio output with more than 8 channels, potentially leading to system instability or loss of audio functionality on affected hardware. It may disrupt normal system operation and require a reboot to recover.

Mitigation Strategies

Apply the Linux kernel update that includes the fix for the ALSA hda 9.1 surround channel names issue to prevent the Oops caused by overflowing the static array. As a workaround, ensure the system uses the patched code that extends support for 9.1 channels and includes proper size checks to avoid the overflow.

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