Kernel memory corruption via mistyped AER driver data
Published Aug 15, 2026 · Updated Aug 15, 2026
Type confusion in Linux 6.17 rtw88 PCI AER handlers allows physically proximate attackers to corrupt kernel memory during error recovery. The io_error_detected and io_resume callbacks retrieve an ieee80211_hw pointer as net_device, so detach and attach operations read and write wrong structure offsets. Reachability requires an affected rtw88 PCI device and an AER recovery event; the published record does not establish code execution.
Summary
What happened
Type confusion in Linux 6.17 rtw88 PCI AER handlers allows physically proximate attackers to corrupt kernel memory during error recovery. The io_error_detected and io_resume callbacks retrieve an ieee80211_hw pointer as net_device, so detach and attach operations read and write wrong structure offsets. Reachability requires an affected rtw88 PCI device and an AER recovery event; the published record does not establish code execution.
The record
- CVE
- CVE-2026-74412
- Published
- Aug 15, 2026
- Updated
- Aug 15, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-843, T1499.004
- Attack vector
- physical
- 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=6.17
- Affected versionversion=cdb82c80b9349ed1d9ce6b49856128e04f4effc9 <1ef3d1338d94ec41f58fbfb6ba7742a27ea61d89
- Affected versionversion=cdb82c80b9349ed1d9ce6b49856128e04f4effc9 <706183dbef4a79d120d4e928f693bea50df496f8
- Affected versionversion=cdb82c80b9349ed1d9ce6b49856128e04f4effc9 <d7920797f721f944861f3c48ffb2b73f84b631fe
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
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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