Local kernel compromise via queued freeze work
Published Dec 27, 2024 · Updated Aug 5, 2026
Use-after-free in the Binder driver in Linux 6.12 through 6.12.3 allows local users to compromise the kernel through /dev/binder. binder_release_work() frees a Binder reference without dequeuing its freeze work from proc->work, so a worker later reads the reclaimed object. An unprivileged local app can control freeze-notification registration and reference teardown, enabling kernel memory disclosure or modification and a kernel crash.
Summary
What happened
Use-after-free in the Binder driver in Linux 6.12 through 6.12.3 allows local users to compromise the kernel through /dev/binder. binder_release_work() frees a Binder reference without dequeuing its freeze work from proc->work, so a worker later reads the reclaimed object. An unprivileged local app can control freeze-notification registration and reference teardown, enabling kernel memory disclosure or modification and a kernel crash.
The record
- CVE
- CVE-2024-56554
- Published
- Dec 27, 2024
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 27, 2024CVE publishedPublication date reported by the CVE source.
- Aug 5, 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?
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- Affected versionversion=6.12
- Affected versionversion=d579b04a52a183db47dfcb7a44304d7747d551e1 <7e20434cbca814cb91a0a261ca0106815ef48e5f
- Affected versionversion=d579b04a52a183db47dfcb7a44304d7747d551e1 <fe39e0ea2d0ba7f508ff453c4c9a44a95ec0de29
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
Your stack
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Your stack
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