Kernel privilege escalation via Binder target-process race
Published Jul 25, 2026 · Updated Jul 25, 2026
Use-after-free in the Linux Kernel Binder driver allows local users to gain kernel privileges or crash the host through Binder ioctls. binder_free_transaction() drops t->lock after reading t->to_proc, then locks the process after concurrent teardown can free it, causing a stale-pointer write. Exploitation requires low-privileged local execution and access to a Binder device or a private BinderFS mount; successful triggering enables kernel-memory corruption, disclosure, a crash, panic, or hang.
Summary
What happened
Use-after-free in the Linux Kernel Binder driver allows local users to gain kernel privileges or crash the host through Binder ioctls. binder_free_transaction() drops t->lock after reading t->to_proc, then locks the process after concurrent teardown can free it, causing a stale-pointer write. Exploitation requires low-privileged local execution and access to a Binder device or a private BinderFS mount; successful triggering enables kernel-memory corruption, disclosure, a crash, panic, or hang.
The record
- CVE
- CVE-2026-64468
- Published
- Jul 25, 2026
- Updated
- Jul 25, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-366, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 25, 2026CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=0e3b977a8f1be01dcfa0baae68851b1f55f2a0a9
- Affected versionversion=22068d49d09d2b3890e19d7b2048a33340f992da
- Affected versionversion=4.14.136 <4.15
- Affected versionversion=4.19.64 <4.20
- Affected versionversion=5.1.15 <5.2
- Affected versionversion=5.2
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <0be901ab1dcc4af59b88f2e324493bb283850167
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <0f15f0f6ca5df566275ce517f257af2559528b41
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <328ccf32acb87e8bbb1fe2b065068c574e4db2bf
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <45df558c543bb5543bacc8065fd7c567740781e5
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <48aeda9f8039e4a6971d1804578efde7f2c01eda
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <5602a43f251c3d75312df91a422675fc00ca3dce
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <d45ef513eed1abebfec90c3cfb6ae50c2a4182db
- Affected versionversion=a370003cc301d4361bae20c9ef615f89bf8d1e8a <f223d27a546c1e1f48d38fd67760e78f068fe8c4
- Affected versionversion=a4a3c070b8760f71c8311399fa9bfe67c8629bca
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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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