Bug 2425117 (CVE-2023-54084)

Summary: CVE-2023-54084 kernel: ALSA: firewire-digi00x: prevent potential use after free
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A potential use-after-free vulnerability was found in the Linux kernel's ALSA firewire-digi00x driver. When init_stream() fails, the error handling code incorrectly frees dg00x->rx_stream but returns success instead of an error code. This leaves a dangling pointer that can be dereferenced later, leading to a use-after-free condition.
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Description OSIDB Bzimport 2025-12-24 14:04:10 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: firewire-digi00x: prevent potential use after free

This code was supposed to return an error code if init_stream()
failed, but it instead freed dg00x->rx_stream and returned success.
This potentially leads to a use after free.
Comment 1 Alexander B 2025-12-25 01:19:24 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122404-CVE-2023-54084-a862@gregkh/T