CVE-2026-63838
ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]
Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: rsnd: Fix potential out-of-bounds access of component_dais[] component_dais[RSND_MAX_COMPONENT] is initially zero-initialized and later populated in rsnd_dai_of_node(). However, the existing boundary check: if (i >= RSND_MAX_COMPONENT) does not guarantee that the last valid element remains zero. As a result, the loop can rely on component_dais[RSND_MAX_COMPONENT] being zero, which may lead to an out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE.
INFO
Published Date :
July 19, 2026, 3:16 p.m.
Last Modified :
July 19, 2026, 3:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-63838
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to a corrected version.
- Verify the applied patch addresses the described issue.
- Apply security updates regularly to prevent vulnerabilities.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-63838.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-63838 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-63838
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-63838 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-63838 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '547b02f74e4ac1e7d295a6266d5bc93a647cd4ac', 'lessThan': '9f1daac27ca28e98c8c0e4450de42bb68d547250', 'versionType': 'git'}, {'status': 'affected', 'version': '547b02f74e4ac1e7d295a6266d5bc93a647cd4ac', 'lessThan': '15e7b2ac2455995a6af02b9d3da7a432837aaf72', 'versionType': 'git'}, {'status': 'affected', 'version': '547b02f74e4ac1e7d295a6266d5bc93a647cd4ac', 'lessThan': '134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5', 'versionType': 'git'}, {'status': 'affected', 'version': '547b02f74e4ac1e7d295a6266d5bc93a647cd4ac', 'lessThan': 'a62b3e6e42359a79158c134e3cf5c74fe160c3f5', 'versionType': 'git'}, {'status': 'affected', 'version': '547b02f74e4ac1e7d295a6266d5bc93a647cd4ac', 'lessThan': 'f9e437cddf6cf9e603bdaefe148c1f4792aaf39c', 'versionType': 'git'}], 'programFiles': ['sound/soc/renesas/rcar/core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/soc/renesas/rcar/core.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ASoC: rsnd: Fix potential out-of-bounds access of component_dais[] component_dais[RSND_MAX_COMPONENT] is initially zero-initialized and later populated in rsnd_dai_of_node(). However, the existing boundary check: if (i >= RSND_MAX_COMPONENT) does not guarantee that the last valid element remains zero. As a result, the loop can rely on component_dais[RSND_MAX_COMPONENT] being zero, which may lead to an out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE. Added Reference https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5 Added Reference https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72 Added Reference https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250 Added Reference https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5 Added Reference https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c