Kernel memory corruption via video-device double free
Published Sep 16, 2026 · Updated Sep 16, 2026
Double free in the Linux zoran media driver allows attackers to corrupt kernel memory during registered video-device teardown. zoran_exit_video_devices() calls video_unregister_device(), whose registered release callback frees the video_device, and then directly frees the same allocation again. The faulty path is reached only when a registered Zoran video device is torn down; public sources do not establish a reliable unprivileged trigger.
Summary
What happened
Double free in the Linux zoran media driver allows attackers to corrupt kernel memory during registered video-device teardown. zoran_exit_video_devices() calls video_unregister_device(), whose registered release callback frees the video_device, and then directly frees the same allocation again. The faulty path is reached only when a registered Zoran video device is torn down; public sources do not establish a reliable unprivileged trigger.
The record
- CVE
- CVE-2026-89870
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=1e501ec38796f43e995731d1bcd4173cb1ccfce0
- Affected versionversion=5.10.110 <5.11
- Affected versionversion=5.15.33 <5.16
- Affected versionversion=5.16.19 <5.17
- Affected versionversion=5.17.2 <5.18
- Affected versionversion=5.18
- Affected versionversion=82e3a496eb56da0b9f29fdc5b63cedb3289e91de <0735e0b5a96761a9ce277a238e834008ad92a0a5
- Affected versionversion=82e3a496eb56da0b9f29fdc5b63cedb3289e91de <3ad6cf27505017a6794f5f96c31218c2291e951b
- Affected versionversion=82e3a496eb56da0b9f29fdc5b63cedb3289e91de <4d99d8d0d895489064783601a516bd45812fa992
- Affected versionversion=82e3a496eb56da0b9f29fdc5b63cedb3289e91de <672dbccf4351370dad002d3c78dbb29ca1588f22
- Affected versionversion=82e3a496eb56da0b9f29fdc5b63cedb3289e91de <c4acac8cdc005b2d14b6cef5e215d264212857f3
- Affected versionversion=82e3a496eb56da0b9f29fdc5b63cedb3289e91de <f1c4f3885df1f09bcab5296d86834d104f865e86
- Affected versionversion=bd01629315ffd5b63da91d0bd529a77d30e55028
- Affected versionversion=c1ba65100a359fe28cfe37e09e10c99f247cbf1e
- Affected versionversion=ff3357bffd9fb78f59762d8955afc7382a279079
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
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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