Bug 2532707 (CVE-2026-90781)

Summary: CVE-2026-90781 alsa-lib: alsa-lib: Denial of Service via off-by-one stack buffer overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
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 flaw was found in alsa-lib. This vulnerability is an off-by-one stack buffer overflow in the `__snd_ctl_ascii_elem_id_parse()` function. A local attacker can exploit this by supplying a specially crafted, long control-element identifier string through saved state files or command-line arguments. This can cause the application to write one byte past a 64-byte buffer, leading to adjacent stack memory corruption and a crash of the calling process, resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2532924    
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Description OSIDB Bzimport 2026-09-13 12:42:18 UTC 
alsa-lib through 1.2.16.1 contains a stack buffer overflow in the __snd_ctl_ascii_elem_id_parse() function that writes one byte past a 64-byte buffer when parsing a name= field with 64 or more characters. Attackers can supply a long control-element identifier string through saved state files or command-line arguments to overwrite adjacent stack memory and crash the calling process.