Kernel-stack disclosure via hdcp2 boundary-check failure
Published Mar 8, 2022 · Updated Aug 3, 2024
An out-of-bounds read in the hdcp2 device node before SMR Mar-2022 Release 1 allows local users to read Samsung Exynos kernel memory. The node lacks a proper boundary check and reads beyond its intended buffer, exposing limited uninitialized kernel-stack contents. A low-privileged local context is required, and the documented consequence is limited kernel-memory disclosure.
Summary
What happened
An out-of-bounds read in the hdcp2 device node before SMR Mar-2022 Release 1 allows local users to read Samsung Exynos kernel memory. The node lacks a proper boundary check and reads beyond its intended buffer, exposing limited uninitialized kernel-stack contents. A low-privileged local context is required, and the documented consequence is limited kernel-memory disclosure.
The record
- CVE
- CVE-2022-25819
- Published
- Mar 8, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 8, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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Attacks
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