Kernel crash via stranded wiphy namespace pointer
Published Oct 6, 2026 · Updated Oct 6, 2026
A kernel crash in affected Linux kernels allows context-dependent attackers to interrupt service during Wi-Fi network namespace teardown. When an interface move fails, cfg80211_pernet_exit() only warns and leaves its wiphy pointing to the dying namespace; later notification through that pointer faults in kernel mode. The failure requires a Wi-Fi interface in a namespace being destroyed and an unsuccessful move, such as one caused by an allocation failure.
Summary
What happened
A kernel crash in affected Linux kernels allows context-dependent attackers to interrupt service during Wi-Fi network namespace teardown. When an interface move fails, cfg80211_pernet_exit() only warns and leaves its wiphy pointing to the dying namespace; later notification through that pointer faults in kernel mode. The failure requires a Wi-Fi interface in a namespace being destroyed and an unsuccessful move, such as one caused by an allocation failure.
The record
- CVE
- CVE-2026-98330
- Published
- Oct 6, 2026
- Updated
- Oct 6, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Oct 6, 2026CVE publishedPublication date reported by the CVE source.
- Oct 6, 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=2.6.32
- Affected versionversion=463d018323851a608eef52a9427b0585005c647f <4635b1a1c1d693178a537446a6e09963f0fdae52
- Affected versionversion=463d018323851a608eef52a9427b0585005c647f <b949b2720688691f1e41bdbfbe3df2b6dc77c34d
- Affected versionversion=463d018323851a608eef52a9427b0585005c647f <caa02072b2986d4b0e7a824de05782ef7b03a0ba
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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