Privilege escalation via inflated Binder copy bounds
Published Aug 15, 2026 · Updated Aug 15, 2026
Buffer overflow in Linux kernel 6.14 allows local users to corrupt kernel memory through crafted Binder scatter-gather transactions. The binder_transaction function calculates sg_buf_end_offset after security_release_secctx clears lsmctx.len, inflating the copy bound so BINDER_TYPE_PTR data overwrites the stored security context. Low-privileged access to /dev/binder or binderfs is required; successful exploitation can disclose sensitive data or escalate privileges.
Summary
What happened
Buffer overflow in Linux kernel 6.14 allows local users to corrupt kernel memory through crafted Binder scatter-gather transactions. The binder_transaction function calculates sg_buf_end_offset after security_release_secctx clears lsmctx.len, inflating the copy bound so BINDER_TYPE_PTR data overwrites the stored security context. Low-privileged access to /dev/binder or binderfs is required; successful exploitation can disclose sensitive data or escalate privileges.
The record
- CVE
- CVE-2026-68458
- Published
- Aug 15, 2026
- Updated
- Aug 15, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-120, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 15, 2026CVE publishedPublication date reported by the CVE source.
- Aug 15, 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=6.14
- Affected versionversion=6fba89813ccf333d2bc4d5caea04cd5f3c39eb50 <1228926e1e4d605cc74d9e675558982a6f2cf446
- Affected versionversion=6fba89813ccf333d2bc4d5caea04cd5f3c39eb50 <4257f45ee1fddd0558e77b62af8bb63fd87b2162
- Affected versionversion=6fba89813ccf333d2bc4d5caea04cd5f3c39eb50 <b34826e55aad3520ec813f1f367c11b24b29dc9f
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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