Buffer overflow via unchecked plugin-block index
Published Oct 20, 2021 · Updated Aug 3, 2024
Integer wraparound in Qualcomm Snapdragon VR Service allows local users to trigger a buffer overflow via a crafted plugin block. The service processes a plugin-block index without adequate validation, allowing the index calculation to wrap and address memory outside the intended buffer. Local access to an affected chipset is required, and Qualcomm has not disclosed the exact code path or post-corruption behavior.
Summary
What happened
Integer wraparound in Qualcomm Snapdragon VR Service allows local users to trigger a buffer overflow via a crafted plugin block. The service processes a plugin-block index without adequate validation, allowing the index calculation to wrap and address memory outside the intended buffer. Local access to an affected chipset is required, and Qualcomm has not disclosed the exact code path or post-corruption behavior.
The record
- CVE
- CVE-2021-1984
- Published
- Oct 20, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-190
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 20, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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