Kernel memory exposure via stream encoder bounds error
Published Jun 18, 2025 · Updated Aug 5, 2026
An out-of-bounds read in the Linux kernel AMD display driver in affected 5.14-based branches allows local users to access adjacent kernel memory. The dcn303_stream_encoder_create function accepts eng_id through ENGINE_ID_DIGE despite DCN303 having only two encoders, then uses it to select VPG and AFMT instances. Exploitation requires local low-privileged access and the DCN303 display path; public materials disclose neither a concrete trigger nor an observed outcome.
Summary
What happened
An out-of-bounds read in the Linux kernel AMD display driver in affected 5.14-based branches allows local users to access adjacent kernel memory. The dcn303_stream_encoder_create function accepts eng_id through ENGINE_ID_DIGE despite DCN303 having only two encoders, then uses it to select VPG and AFMT instances. Exploitation requires local low-privileged access and the DCN303 display path; public materials disclose neither a concrete trigger nor an observed outcome.
The record
- CVE
- CVE-2022-50079
- Published
- Jun 18, 2025
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 18, 2025CVE 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=5.14
- Affected versionversion=cd6d421e3d1ad5926b74091254e345db730e7706 <4c31dca1799612eb3b6413e3e574f90c3fb8f865
- Affected versionversion=cd6d421e3d1ad5926b74091254e345db730e7706 <82a27c1855445d48aacc67b0c0640f3dadebe52f
- Affected versionversion=cd6d421e3d1ad5926b74091254e345db730e7706 <89b008222c2bf21e50219725caed31590edfd9d1
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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