CVE-2024-56553

Kernel memory exhaustion via uncleared Binder freeze work

Published Dec 27, 2024 · Updated May 11, 2026

Memory leak in the Binder driver in Linux 6.12 allows local users to consume kernel memory through crafted freeze-notification ioctls. Clearing a notification before binder_freeze_notification_done detaches ref->freeze but leaves its work queued in proc->delivered_freeze. Local access to the Binder device and control of the ioctl sequence are required; repeated leaked allocations can degrade system availability.

CVSS severity3.3
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Binder driver in Linux 6.12 allows local users to consume kernel memory through crafted freeze-notification ioctls. Clearing a notification before binder_freeze_notification_done detaches ref->freeze but leaves its work queued in proc->delivered_freeze. Local access to the Binder device and control of the ioctl sequence are required; repeated leaked allocations can degrade system availability.

The record

CVE
CVE-2024-56553
Published
Dec 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.12
  2. Affected versionversion=d579b04a52a183db47dfcb7a44304d7747d551e1 <1db76ec2b4b206ff943e292a0b55e68ff3443598
  3. Affected versionversion=d579b04a52a183db47dfcb7a44304d7747d551e1 <b8b77712142fb146fe18d2253bc8a798d522e427

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=d579b04a52a183db47dfcb7a44304d7747d551e1 <1db76ec2b4b206ff943e292a0b55e68ff3443598; version=d579b04a52a183db47dfcb7a44304d7747d551e1 <b8b77712142fb146fe18d2253bc8a798d522e427

Published CVSS scores

3.3CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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

CWE-401Missing Release of Memory after Effective Lifetime
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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