CVE-2026-64484

Local system crash via unchecked allocation failure

Published Jul 25, 2026 · Updated Jul 25, 2026

NULL pointer dereference in the Linux Kernel ALSA es1938 driver allows local users to crash the system during mixer initialization. The snd_es1938_mixer function dereferences the result of snd_ctl_new1 without first checking whether allocation returned NULL. Triggering requires the ESS Solo-1 device path and a memory-allocation failure during mixer setup; the documented consequence is a kernel crash.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux Kernel ALSA es1938 driver allows local users to crash the system during mixer initialization. The snd_es1938_mixer function dereferences the result of snd_ctl_new1 without first checking whether allocation returned NULL. Triggering requires the ESS Solo-1 device path and a memory-allocation failure during mixer setup; the documented consequence is a kernel crash.

The record

CVE
CVE-2026-64484
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1949163dee39e0e4a1468f37dd7302962f6af45a
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1edd1f02dddd20aeb6066ded41017615766ea42f
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <41759affbcfe3d51a32900da9547a1ffd744a85f
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6c4efebaf73e217efbd08cdbda805758a7db3680
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7531a37720c2545a480fd0fa464978569bf9d6a2
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <96cad5bd7d0a176db3fdc06717a41271247336bd
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9e53e99b6fa3cd82992d963cbff58dbbd1df8651
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <af01c48e17a66fa038af210a5c49d6cdefd210bd
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1949163dee39e0e4a1468f37dd7302962f6af45a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1edd1f02dddd20aeb6066ded41017615766ea42f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <41759affbcfe3d51a32900da9547a1ffd744a85f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6c4efebaf73e217efbd08cdbda805758a7db3680; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7531a37720c2545a480fd0fa464978569bf9d6a2; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <96cad5bd7d0a176db3fdc06717a41271247336bd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9e53e99b6fa3cd82992d963cbff58dbbd1df8651; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <af01c48e17a66fa038af210a5c49d6cdefd210bd; version=2.6.12

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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