CVE-2026-64484 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: es1938: check snd_ctl_new1() return value snd_ctl_new1() can return NULL when memory allocation fails. snd_es1938_mixer() does not check the return value before dereferencing the pointer, which can lead to a NULL pointer dereference. Add a NULL check after snd_ctl_new1() and return -ENOMEM if it fails.
A vulnerability in the Linux kernel's ALSA es1938 driver can lead to a NULL pointer dereference. The issue arises because the function snd_ctl_new1() may return NULL if memory allocation fails, but the subsequent function snd_es1938_mixer() does not verify this return value before dereferencing the pointer. This oversight can cause a crash by dereferencing a NULL pointer. The vulnerability affects the Linux kernel stable tree.
The vulnerability has been addressed by adding a NULL check after the snd_ctl_new1() call in the snd_es1938_mixer() function. Users should upgrade to the patched version of the Linux kernel available in the Linux kernel stable tree.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
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Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
No affected product data is available for this CVE.
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 17, 2026 | CVE Modified | kernel.org |
| Jul 25, 2026 | New CVE Received | kernel.org |