Kernel panic via freed Hantro resource data
Published Apr 24, 2026 · Updated Apr 24, 2026
Denial of service in the Linux kernel 6.19.6 through 6.19.10 allows local users to trigger a kernel panic during Hantro VPU probing. The imx8mq_vpu_shared_resources array is discarded after module initialization because __initconst places it in freed init memory, but hantro_probe later dereferences it. The driver must be built as a module, and deferred probing or unbind-bind cycles must reach the stale array; the resulting page fault crashes the host.
Summary
What happened
Denial of service in the Linux kernel 6.19.6 through 6.19.10 allows local users to trigger a kernel panic during Hantro VPU probing. The imx8mq_vpu_shared_resources array is discarded after module initialization because __initconst places it in freed init memory, but hantro_probe later dereferences it. The driver must be built as a module, and deferred probing or unbind-bind cycles must reach the stale array; the resulting page fault crashes the host.
The record
- CVE
- CVE-2026-31573
- Published
- Apr 24, 2026
- Updated
- Apr 24, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 24, 2026CVE publishedPublication date reported by the CVE source.
- Apr 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
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- Affected versionversion=286d629d10640bc22f3bf46aa4f356eb7975e862 <1e7e9119cf9b0d8585b27653b1a6dc31397c252e
- Affected versionversion=6.19.6 <6.19.11
- Affected versionversion=e0203ddf9af7c8e170e1e99ce83b4dc07f0cd765 <e8d97c270cb46a2a88739019d0f8547adc7d97da
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