Kernel memory corruption via unreleased UVC buffers
Published May 8, 2026 · Updated May 8, 2026
Improper buffer handling in Linux Kernel 6.17 through 6.18.15 and 6.19 through 6.19.5 allows local users to corrupt kernel memory. The uvc_start_streaming_video error path returns directly when uvc_pm_get fails, leaving queued buffers referenced after videobuf2 reclaims them. Triggering requires low-privileged access to a UVC video device and a power-management failure during stream start; stale references can expose or overwrite kernel memory or crash the system.
Summary
What happened
Improper buffer handling in Linux Kernel 6.17 through 6.18.15 and 6.19 through 6.19.5 allows local users to corrupt kernel memory. The uvc_start_streaming_video error path returns directly when uvc_pm_get fails, leaving queued buffers referenced after videobuf2 reclaims them. Triggering requires low-privileged access to a UVC video device and a power-management failure during stream start; stale references can expose or overwrite kernel memory or crash the system.
The record
- CVE
- CVE-2026-43290
- Published
- May 8, 2026
- Updated
- May 8, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- May 8, 2026CVE publishedPublication date reported by the CVE source.
- May 8, 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=6.17
- Affected versionversion=7dd56c47784a466b03df62ca766207f483353cdc <4cf3b6fd54ebb1ebc977bdc47fb6cfcf9a471a22
- Affected versionversion=7dd56c47784a466b03df62ca766207f483353cdc <69c32df23bed6001864779b965fa009bcd9a26de
- Affected versionversion=7dd56c47784a466b03df62ca766207f483353cdc <a5c01f15809d1d2c319d8bfb11d071df11ab731c
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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