Qemu: Heap-buffer-overflow in megasas_map_sgl
A heap-buffer-overflow vulnerability was identified in QEMU's megasas_map_sgl function, reported by OSS-Fuzz. The issue involves a read overflow of 4 bytes on the heap, potentially leading to memory corruption. The vulnerability affects many specific QEMU versions from 6.2.0 through 11.1.0-rc2 and later commits. No CVSS score or vendor patch information is provided. The severity is assessed as medium based on the nature of the overflow and lack of known exploits.
AI Analysis
Technical Summary
This vulnerability is a heap-buffer-overflow read of 4 bytes occurring in the megasas_map_sgl function within QEMU, as reported by OSS-Fuzz. The crash stack trace includes megasas_map_sgl, megasas_mmio_write, and megasas_port_write functions. The issue affects a wide range of QEMU versions starting from 6.2.0 and continuing through multiple release candidates and stable releases up to at least 11.1.0-rc2, including a commit identified by hash >=0e042025b9fe262316f29e4b8ec47f0b85c24e5f. No vendor advisory or patch information is provided in the data, and no known exploits in the wild have been reported.
Potential Impact
The heap-buffer-overflow read could lead to memory corruption within QEMU, potentially causing crashes or undefined behavior. The exact impact on confidentiality, integrity, or availability is not detailed. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor QEMU vendor channels for updates addressing this heap-buffer-overflow vulnerability.
Qemu: Heap-buffer-overflow in megasas_map_sgl
Description
A heap-buffer-overflow vulnerability was identified in QEMU's megasas_map_sgl function, reported by OSS-Fuzz. The issue involves a read overflow of 4 bytes on the heap, potentially leading to memory corruption. The vulnerability affects many specific QEMU versions from 6.2.0 through 11.1.0-rc2 and later commits. No CVSS score or vendor patch information is provided. The severity is assessed as medium based on the nature of the overflow and lack of known exploits.
Affected software
pkg:generic/qemuRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-buffer-overflow read of 4 bytes occurring in the megasas_map_sgl function within QEMU, as reported by OSS-Fuzz. The crash stack trace includes megasas_map_sgl, megasas_mmio_write, and megasas_port_write functions. The issue affects a wide range of QEMU versions starting from 6.2.0 and continuing through multiple release candidates and stable releases up to at least 11.1.0-rc2, including a commit identified by hash >=0e042025b9fe262316f29e4b8ec47f0b85c24e5f. No vendor advisory or patch information is provided in the data, and no known exploits in the wild have been reported.
Potential Impact
The heap-buffer-overflow read could lead to memory corruption within QEMU, potentially causing crashes or undefined behavior. The exact impact on confidentiality, integrity, or availability is not detailed. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor QEMU vendor channels for updates addressing this heap-buffer-overflow vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2022-581
- Osv Schema Version
- 1.3.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a6ae5619c2644c7f89b0e4a
Added to database: 07/30/2026, 05:47:13 UTC
Last enriched: 08/12/2026, 17:56:29 UTC
Last updated: 09/07/2026, 17:12:17 UTC
Views: 47
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.