Kernel memory disclosure and crash via Binder race
Published Dec 27, 2024 · Updated Aug 5, 2026
Out-of-bounds read in Linux kernel 6.12 through 6.12.3 allows local users to disclose kernel memory or crash the system via Binder. binder_add_freeze_work drops proc->inner_lock while iterating proc->nodes, allowing binder_deferred_release to move union-backed nodes before rb_next reads them. Exploitation requires local access to a Binder device; the attacker-controlled race can corrupt kernel state, panic the host, or deadlock it.
Summary
What happened
Out-of-bounds read in Linux kernel 6.12 through 6.12.3 allows local users to disclose kernel memory or crash the system via Binder. binder_add_freeze_work drops proc->inner_lock while iterating proc->nodes, allowing binder_deferred_release to move union-backed nodes before rb_next reads them. Exploitation requires local access to a Binder device; the attacker-controlled race can corrupt kernel state, panic the host, or deadlock it.
The record
- CVE
- CVE-2024-56555
- Published
- Dec 27, 2024
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-125, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.12
- Affected versionversion=d579b04a52a183db47dfcb7a44304d7747d551e1 <011e69a1b23011c0db3af4b8293fdd4522cc97b0
- Affected versionversion=d579b04a52a183db47dfcb7a44304d7747d551e1 <6b1be1da1f8279cf091266e71b5153c5b02aaff6
What conditions does exploitation require?
What is affected?
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.
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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