Kernel-memory corruption via stale WCID list entries
Published Sep 19, 2025 · Updated Sep 19, 2025
Out-of-bounds write in Linux 6.2 through 6.16.5 allows physically proximate attackers to corrupt kernel memory via Wi-Fi frames. The mt7915 reset path restarts mac80211 without first clearing WCID list membership and station associations, so recreated entries reuse linked nodes and corrupt kernel lists. An unauthenticated attacker within Wi-Fi range can trigger the reset with management-frame traffic, producing kernel-memory reads and writes or an AP crash or hang.
Summary
What happened
Out-of-bounds write in Linux 6.2 through 6.16.5 allows physically proximate attackers to corrupt kernel memory via Wi-Fi frames. The mt7915 reset path restarts mac80211 without first clearing WCID list membership and station associations, so recreated entries reuse linked nodes and corrupt kernel lists. An unauthenticated attacker within Wi-Fi range can trigger the reset with management-frame traffic, producing kernel-memory reads and writes or an AP crash or hang.
The record
- CVE
- CVE-2025-39862
- Published
- Sep 19, 2025
- Updated
- Sep 19, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-787, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 19, 2025CVE publishedPublication date reported by the CVE source.
- Sep 19, 2025Record 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=6.2
- Affected versionversion=8a55712d124fd8a919e8a69b70643e1a97280b4b <065c79df595af21d6d1b27d642860faa1d938774
- Affected versionversion=8a55712d124fd8a919e8a69b70643e1a97280b4b <8fa8eb52bc2eb08d93202863b5fc478e0bebc00c
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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