CVE-2026-64001
ALSA: pcm: oss: Fix setup list UAF on proc write error
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix setup list UAF on proc write error snd_pcm_oss_proc_write() links a newly allocated setup entry into the OSS setup list before duplicating the task name. If the task-name allocation fails, the error path frees the already linked entry and leaves setup_list pointing at freed memory. A later OSS device open can then walk the stale list entry in snd_pcm_oss_look_for_setup() and dereference freed memory. Allocate the task name and initialize the setup entry before publishing the entry on setup_list. Also fetch the initial proc read iterator only after taking setup_mutex, so all setup_list traversal follows the same list lifetime rules.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
July 30, 2026, 2:51 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Allocate task name and initialize setup entry before publishing.
- Fetch proc read iterator after taking setup_mutex.
- Ensure list traversal follows list lifetime rules.
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-2026-64001.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64001 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-2026-64001
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).
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The following list is the news that have been mention
CVE-2026-64001 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64001 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': '060d77b9c04acd7aef60790398a53f731db8c8fe', 'lessThan': '8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce', 'versionType': 'git'}, {'status': 'affected', 'version': '060d77b9c04acd7aef60790398a53f731db8c8fe', 'lessThan': 'e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c', 'versionType': 'git'}, {'status': 'affected', 'version': '060d77b9c04acd7aef60790398a53f731db8c8fe', 'lessThan': 'be387230dc22d870afd0e5d35912b07c2bc323bd', 'versionType': 'git'}, {'status': 'affected', 'version': '060d77b9c04acd7aef60790398a53f731db8c8fe', 'lessThan': '4cc54bdd54b337e77115be5b55577d1c58608eae', 'versionType': 'git'}], 'programFiles': ['sound/core/oss/pcm_oss.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.93', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.35', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.12', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/core/oss/pcm_oss.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix setup list UAF on proc write error snd_pcm_oss_proc_write() links a newly allocated setup entry into the OSS setup list before duplicating the task name. If the task-name allocation fails, the error path frees the already linked entry and leaves setup_list pointing at freed memory. A later OSS device open can then walk the stale list entry in snd_pcm_oss_look_for_setup() and dereference freed memory. Allocate the task name and initialize the setup entry before publishing the entry on setup_list. Also fetch the initial proc read iterator only after taking setup_mutex, so all setup_list traversal follows the same list lifetime rules. Added Reference https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae Added Reference https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce Added Reference https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd Added Reference https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c