Kernel memory exposure and corruption via off-by-one indexing
Published Jun 9, 2026 · Updated Jun 9, 2026
Off-by-one array access in Linux Kernel 6.19 allows local users to read kernel data, misdirect MMIO writes, or crash the system. In rkcif-capture-mipi.c, register helpers accept block, ID, or index values equal to an array length because bounds checks use > rather than >=, then use the out-of-range entry to derive MMIO addresses. Access requires a Rockchip RK3568 VICAP MIPI V4L2 node and low-privilege local device access, such as video-group permission; streaming ioctls can trigger kernel-memory disclosure, unintended hardware writes, a panic, or hung capture.
Summary
What happened
Off-by-one array access in Linux Kernel 6.19 allows local users to read kernel data, misdirect MMIO writes, or crash the system. In rkcif-capture-mipi.c, register helpers accept block, ID, or index values equal to an array length because bounds checks use > rather than >=, then use the out-of-range entry to derive MMIO addresses. Access requires a Rockchip RK3568 VICAP MIPI V4L2 node and low-privilege local device access, such as video-group permission; streaming ioctls can trigger kernel-memory disclosure, unintended hardware writes, a panic, or hung capture.
The record
- CVE
- CVE-2026-52907
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-193, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 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=1f2353f5a1af995efbf7bea44341aa0d03460b28 <73e119036b3a799170ed89907b4273c07306d611
- Affected versionversion=1f2353f5a1af995efbf7bea44341aa0d03460b28 <e4056b84af0fc18c84b4e5741df04ecd8ca17973
- Affected versionversion=6.19
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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