Privilege escalation via dangling exc3000 timer
Published Oct 7, 2025 · Updated Oct 7, 2025
Use-after-free in Linux kernel 4.15 through 6.1.19 and 6.2 through 6.2.2 allows local users to gain kernel privileges. The exc3000 driver's 100 ms stuck-contact timer remains armed when probe fails or the I2C driver is unbound, then its callback dereferences freed driver data. An EETI EXC3000-family touchscreen and a local path to trigger unbind, module unload, or probe failure are required; the dangling callback can also expose or modify kernel memory or crash the kernel.
Summary
What happened
Use-after-free in Linux kernel 4.15 through 6.1.19 and 6.2 through 6.2.2 allows local users to gain kernel privileges. The exc3000 driver's 100 ms stuck-contact timer remains armed when probe fails or the I2C driver is unbound, then its callback dereferences freed driver data. An EETI EXC3000-family touchscreen and a local path to trigger unbind, module unload, or probe failure are required; the dangling callback can also expose or modify kernel memory or crash the kernel.
The record
- CVE
- CVE-2023-53651
- Published
- Oct 7, 2025
- Updated
- Oct 7, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 7, 2025CVE publishedPublication date reported by the CVE source.
- Oct 7, 2025Record 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=4.15
- Affected versionversion=7e577a17f2eefeef32f1106ebf91e7cd143ba654 <526a177ac6353d65057eadb5d6edafc168f64484
- Affected versionversion=7e577a17f2eefeef32f1106ebf91e7cd143ba654 <79c81d137d36f9635bbcbc3916c0cccb418a61dd
- Affected versionversion=7e577a17f2eefeef32f1106ebf91e7cd143ba654 <bee57c20fc0ca5ef9b9a53a0335eab2ac9e9cae1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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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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