Kernel disclosure and crash via unterminated DMI table
Published Aug 22, 2025 · Updated Aug 5, 2026
An out-of-bounds read in Linux kernel 6.15 through 6.15.8 allows local users to read kernel memory or crash affected systems. The unterminated awcc_dmi_table makes dmi_first_match walk beyond the array, index adjacent dmi_ident data, and dereference it as a string pointer. The initialization path runs at boot or module load only on hardware exposing WMAX_CONTROL_GUID, where the invalid read can disclose memory or trigger a kernel oops.
Summary
What happened
An out-of-bounds read in Linux kernel 6.15 through 6.15.8 allows local users to read kernel memory or crash affected systems. The unterminated awcc_dmi_table makes dmi_first_match walk beyond the array, index adjacent dmi_ident data, and dereference it as a string pointer. The initialization path runs at boot or module load only on hardware exposing WMAX_CONTROL_GUID, where the invalid read can disclose memory or trigger a kernel oops.
The record
- CVE
- CVE-2025-38661
- Published
- Aug 22, 2025
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 22, 2025CVE publishedPublication date reported by the CVE source.
- Aug 5, 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=6.15
- Affected versionversion=6d7f1b1a5db61c4d654c84e17392916c4ef8ae6f <660bcd9f1f94e623e1316b869b2172b36eb516d7
- Affected versionversion=6d7f1b1a5db61c4d654c84e17392916c4ef8ae6f <8346c6af27f1c1410eb314f4be5875fdf1579a10
What conditions does exploitation require?
What is affected?
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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