In the Linux kernel, the following vulnerability has been resolved: ALSA: cmipci: check snd_ctl_new1() return value snd_ctl_new1() can return NULL… (CVE-2026-64486)
A vulnerability in the Linux kernel ALSA cmipci driver was resolved by adding checks for NULL return values from snd_ctl_new1(). Without these checks, dereferencing a NULL pointer could occur if memory allocation failed, leading to a potential kernel NULL pointer dereference.
AI Analysis
Technical Summary
The Linux kernel ALSA cmipci driver contained a vulnerability where the function snd_ctl_new1() could return NULL on memory allocation failure. The snd_cmipci_spdif_controls() function did not verify this return value before dereferencing kctl->id.device, resulting in a NULL pointer dereference. The issue was fixed by adding NULL checks after snd_ctl_new1() calls and returning -ENOMEM if allocation fails.
Potential Impact
This vulnerability can cause a NULL pointer dereference in kernel space, which may lead to a kernel crash (denial of service). There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding NULL checks after snd_ctl_new1() calls and returning an error code if allocation fails. Users should update to a kernel version that includes this fix. Patch status is not explicitly confirmed here; check the vendor or Linux kernel advisory for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: ALSA: cmipci: check snd_ctl_new1() return value snd_ctl_new1() can return NULL… (CVE-2026-64486)
Description
A vulnerability in the Linux kernel ALSA cmipci driver was resolved by adding checks for NULL return values from snd_ctl_new1(). Without these checks, dereferencing a NULL pointer could occur if memory allocation failed, leading to a potential kernel NULL pointer dereference.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel ALSA cmipci driver contained a vulnerability where the function snd_ctl_new1() could return NULL on memory allocation failure. The snd_cmipci_spdif_controls() function did not verify this return value before dereferencing kctl->id.device, resulting in a NULL pointer dereference. The issue was fixed by adding NULL checks after snd_ctl_new1() calls and returning -ENOMEM if allocation fails.
Potential Impact
This vulnerability can cause a NULL pointer dereference in kernel space, which may lead to a kernel crash (denial of service). There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding NULL checks after snd_ctl_new1() calls and returning an error code if allocation fails. Users should update to a kernel version that includes this fix. Patch status is not explicitly confirmed here; check the vendor or Linux kernel advisory for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vfc2-3rqx-xchh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64486"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542069c2644c7f8082387
Added to database: 07/25/2026, 23:08:54 UTC
Last enriched: 07/25/2026, 23:16:19 UTC
Last updated: 07/26/2026, 05:12:05 UTC
Views: 4
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