In the Linux kernel, the following vulnerability has been resolved: ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]… (CVE-2026-63838)
A vulnerability in the Linux kernel's ASoC rsnd component involves a potential out-of-bounds access of the component_dais[] array. The issue arises because the boundary check does not ensure the last valid element remains zero, which can lead to accessing memory beyond the array bounds. This vulnerability was identified and resolved by the Linux Verification Center using SVACE analysis.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel affects the ASoC rsnd driver where the component_dais[] array, sized by RSND_MAX_COMPONENT, is zero-initialized but later populated without a sufficient boundary check. The check 'if (i >= RSND_MAX_COMPONENT)' does not guarantee that the last element remains zero, causing loops relying on this condition to potentially access out-of-bounds memory. This flaw could lead to undefined behavior or memory corruption. The issue was discovered by the Linux Verification Center and has been fixed in the kernel.
Potential Impact
The vulnerability can cause out-of-bounds memory access in the kernel, which may lead to system instability or crashes. There is no indication of known exploits in the wild or direct evidence of privilege escalation or code execution from this flaw based on the provided data.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users should update to the latest kernel version containing this patch. Since no vendor advisory or patch links are provided, check the official Linux kernel repositories or trusted Linux distribution advisories for the specific patch and update instructions.
In the Linux kernel, the following vulnerability has been resolved: ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]… (CVE-2026-63838)
Description
A vulnerability in the Linux kernel's ASoC rsnd component involves a potential out-of-bounds access of the component_dais[] array. The issue arises because the boundary check does not ensure the last valid element remains zero, which can lead to accessing memory beyond the array bounds. This vulnerability was identified and resolved by the Linux Verification Center using SVACE analysis.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel affects the ASoC rsnd driver where the component_dais[] array, sized by RSND_MAX_COMPONENT, is zero-initialized but later populated without a sufficient boundary check. The check 'if (i >= RSND_MAX_COMPONENT)' does not guarantee that the last element remains zero, causing loops relying on this condition to potentially access out-of-bounds memory. This flaw could lead to undefined behavior or memory corruption. The issue was discovered by the Linux Verification Center and has been fixed in the kernel.
Potential Impact
The vulnerability can cause out-of-bounds memory access in the kernel, which may lead to system instability or crashes. There is no indication of known exploits in the wild or direct evidence of privilege escalation or code execution from this flaw based on the provided data.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users should update to the latest kernel version containing this patch. Since no vendor advisory or patch links are provided, check the official Linux kernel repositories or trusted Linux distribution advisories for the specific patch and update instructions.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vfg9-hvpm-5mgj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-63838"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27ac2a4a8d5989130c92
Added to database: 07/19/2026, 19:38:20 UTC
Last enriched: 07/19/2026, 20:16:36 UTC
Last updated: 07/20/2026, 17:26:47 UTC
Views: 12
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.