Memory disclosure or crash via topology confusion
Published Feb 26, 2025 · Updated Aug 15, 2026
Out-of-bounds read in Linux 5.18 through 5.18.2 allows local users to disclose kernel memory or crash the system via crafted SOF topology. sof_get_control_data() applies bytes-payload parsing to non-bytes controls and stores an sof_abi_hdr pointer where the control-value array and its size are required. A low-privileged local user must cause the kernel's SOF audio topology path to parse the crafted control; the resulting access is limited to disclosure or service interruption.
Summary
What happened
Out-of-bounds read in Linux 5.18 through 5.18.2 allows local users to disclose kernel memory or crash the system via crafted SOF topology. sof_get_control_data() applies bytes-payload parsing to non-bytes controls and stores an sof_abi_hdr pointer where the control-value array and its size are required. A low-privileged local user must cause the kernel's SOF audio topology path to parse the crafted control; the resulting access is limited to disclosure or service interruption.
The record
- CVE
- CVE-2022-49518
- Published
- Feb 26, 2025
- Updated
- Aug 15, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 26, 2025CVE publishedPublication date reported by the CVE source.
- Aug 15, 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?
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- Affected versionversion=5.14
- Affected versionversion=d29d41e28eea65493395dda0b6d1fff23ca374f4 <896b03bb7c7010042786cfae2115083d4c241dd3
- Affected versionversion=d29d41e28eea65493395dda0b6d1fff23ca374f4 <a962890a5a3cce903ff7c7a19fadee63ed9efdc7
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Technologies
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Your stack
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