CVE-2026-64484: Linux kernel · ALSA: es1938: check snd_ctl_new1() return value
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 3 Nov 2026, 19:28 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
AI-suggested
A fix has been implemented in the Linux kernel by adding a NULL check after snd_ctl_new1() and returning an error code if memory allocation fails. Users should update to the fixed kernel version once available. No other mitigation steps are indicated.
Description
A vulnerability in the Linux kernel ALSA es1938 driver occurs due to missing NULL pointer checks after the snd_ctl_new1() function call. This function can return NULL on memory allocation failure, and the lack of validation leads to a potential NULL pointer dereference.
References
- git.kernel.org/stable/c/96cad5bd7d0a176db3fdc06717a41271247336bd (opens in a new tab)
- git.kernel.org/stable/c/6c4efebaf73e217efbd08cdbda805758a7db3680 (opens in a new tab)
- git.kernel.org/stable/c/41759affbcfe3d51a32900da9547a1ffd744a85f (opens in a new tab)
- git.kernel.org/stable/c/7531a37720c2545a480fd0fa464978569bf9d6a2 (opens in a new tab)
- git.kernel.org/stable/c/af01c48e17a66fa038af210a5c49d6cdefd210bd (opens in a new tab)
- git.kernel.org/stable/c/9e53e99b6fa3cd82992d963cbff58dbbd1df8651 (opens in a new tab)
- git.kernel.org/stable/c/1949163dee39e0e4a1468f37dd7302962f6af45a (opens in a new tab)
- git.kernel.org/stable/c/1edd1f02dddd20aeb6066ded41017615766ea42f (opens in a new tab)