Kernel memory corruption via premature streaming cleanup
Published Dec 16, 2025 · Updated Dec 16, 2025
Use-after-free in the Linux kernel's i.MX8 ISI driver allows local users to corrupt kernel memory through a V4L2 capture device. mxc_isi_video_release unconditionally cleans up shared streaming resources whenever any file descriptor closes, freeing pipeline objects and DMA pages still used by an active stream. Access to the ISI video node during streaming is required; the stale DMA state enables kernel-memory disclosure or writes and can cause an oops or panic.
Summary
What happened
Use-after-free in the Linux kernel's i.MX8 ISI driver allows local users to corrupt kernel memory through a V4L2 capture device. mxc_isi_video_release unconditionally cleans up shared streaming resources whenever any file descriptor closes, freeing pipeline objects and DMA pages still used by an active stream. Access to the ISI video node during streaming is required; the stale DMA state enables kernel-memory disclosure or writes and can cause an oops or panic.
The record
- CVE
- CVE-2025-68175
- Published
- Dec 16, 2025
- Updated
- Dec 16, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 16, 2025CVE publishedPublication date reported by the CVE source.
- Dec 16, 2025Record updatedLatest update available in the CVE record.
Exploitability
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Is a vulnerable build present?
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- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <029914306b93b37c6e7060793d2b6f76b935cfa6
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <47773031a148ad7973b809cc7723cba77eda2b42
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What is affected?
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Attacks
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