In the Linux kernel, the following vulnerability has been resolved: ALSA: es1938: check snd_ctl_new1() return value snd_ctl_new1() can return NULL… (CVE-2026-64484)
A vulnerability in the Linux kernel ALSA es1938 driver was resolved by adding a NULL pointer check after the snd_ctl_new1() function call. The snd_ctl_new1() function can return NULL if memory allocation fails, but the snd_es1938_mixer() function did not check this return value before dereferencing the pointer, leading to a potential NULL pointer dereference. The fix adds a check to return an error code (-ENOMEM) if snd_ctl_new1() returns NULL.
AI Analysis
Technical Summary
The Linux kernel ALSA es1938 driver contained a vulnerability where the snd_ctl_new1() function could return NULL due to memory allocation failure. The snd_es1938_mixer() function failed to verify this return value before dereferencing it, which could cause a NULL pointer dereference. The vulnerability was resolved by adding a NULL check after snd_ctl_new1() and returning -ENOMEM if the allocation failed.
Potential Impact
This vulnerability could lead to a NULL pointer dereference in the ALSA es1938 driver, potentially causing a kernel crash or denial of service. There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix has been implemented that adds a NULL pointer check after snd_ctl_new1() and returns an error if memory allocation fails. Users should update to the patched Linux kernel version containing this fix. Patch status is not explicitly confirmed in the provided data; check the vendor advisory for current remediation guidance.
In the Linux kernel, the following vulnerability has been resolved: ALSA: es1938: check snd_ctl_new1() return value snd_ctl_new1() can return NULL… (CVE-2026-64484)
Description
A vulnerability in the Linux kernel ALSA es1938 driver was resolved by adding a NULL pointer check after the snd_ctl_new1() function call. The snd_ctl_new1() function can return NULL if memory allocation fails, but the snd_es1938_mixer() function did not check this return value before dereferencing the pointer, leading to a potential NULL pointer dereference. The fix adds a check to return an error code (-ENOMEM) if snd_ctl_new1() returns NULL.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel ALSA es1938 driver contained a vulnerability where the snd_ctl_new1() function could return NULL due to memory allocation failure. The snd_es1938_mixer() function failed to verify this return value before dereferencing it, which could cause a NULL pointer dereference. The vulnerability was resolved by adding a NULL check after snd_ctl_new1() and returning -ENOMEM if the allocation failed.
Potential Impact
This vulnerability could lead to a NULL pointer dereference in the ALSA es1938 driver, potentially causing a kernel crash or denial of service. There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix has been implemented that adds a NULL pointer check after snd_ctl_new1() and returns an error if memory allocation fails. Users should update to the patched Linux kernel version containing this fix. Patch status is not explicitly confirmed in the provided data; check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-783r-hxwf-2cjj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64484"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542079c2644c7f80826f7
Added to database: 07/25/2026, 23:08:55 UTC
Last enriched: 07/25/2026, 23:17:47 UTC
Last updated: 07/26/2026, 04:52:08 UTC
Views: 5
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