Memory access outside intended MMIO region via overflow
Published Feb 21, 2023 · Updated May 5, 2025
Integer overflow in Linux kernel through 6.1.12 allows local users to access memory outside the intended DFL AFU MMIO region. The function adds the supplied offset and size without checking for wraparound, so a wrapped end address can falsely satisfy the region containment test. Exploitation requires local low-privileged access and an active DFL AFU driver; a false match can misdirect MMIO access beyond the intended region.
Summary
What happened
Integer overflow in Linux kernel through 6.1.12 allows local users to access memory outside the intended DFL AFU MMIO region. The function adds the supplied offset and size without checking for wraparound, so a wrapped end address can falsely satisfy the region containment test. Exploitation requires local low-privileged access and an active DFL AFU driver; a false match can misdirect MMIO access beyond the intended region.
The record
- CVE
- CVE-2023-26242
- Published
- Feb 21, 2023
- Updated
- May 5, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-190, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 21, 2023CVE publishedPublication date reported by the CVE source.
- May 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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