Kernel memory corruption via mistyped AER driver data
Published Aug 15, 2026 · Updated Aug 15, 2026
Out-of-bounds write in Linux 6.17 allows context-dependent attackers to corrupt kernel memory during rtw89 PCIe error recovery. The io_error_detected and io_resume handlers cast an ieee80211_hw pointer from pci_get_drvdata as net_device, causing detach and attach operations to read and write incorrect structure offsets. Reachability requires the rtw89 PCI driver, compatible hardware, and execution of a PCIe AER recovery path; no network request surface is documented.
Summary
What happened
Out-of-bounds write in Linux 6.17 allows context-dependent attackers to corrupt kernel memory during rtw89 PCIe error recovery. The io_error_detected and io_resume handlers cast an ieee80211_hw pointer from pci_get_drvdata as net_device, causing detach and attach operations to read and write incorrect structure offsets. Reachability requires the rtw89 PCI driver, compatible hardware, and execution of a PCIe AER recovery path; no network request surface is documented.
The record
- CVE
- CVE-2026-74413
- Published
- Aug 15, 2026
- Updated
- Aug 15, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-787
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 15, 2026CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 <7068c379cf9aa8afe4dce4d9d82390187aa9c4d0
- Affected versionversion=16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 <aefc30e4a829c1683f6ae999df7f9310c27eae6c
- Affected versionversion=16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 <c1907b9a4fa9cb33d11a9af138374dd2e93f7a93
- Affected versionversion=6.17
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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