Code execution via wrapped MBSSID element length
Published Oct 13, 2022 · Updated May 15, 2025
Integer overflow in the Linux kernel before 5.19.16 allows physically proximate attackers to execute code via crafted WLAN frames. In cfg80211_update_notlisted_nontrans(), an 8-bit length wraps when two is added to a 255-byte MBSSID element, so a later memcpy writes 256 bytes beyond its allocation. The attacker must be within wireless range and able to inject frames; successful exploitation can crash the system or execute code in kernel context.
Summary
What happened
Integer overflow in the Linux kernel before 5.19.16 allows physically proximate attackers to execute code via crafted WLAN frames. In cfg80211_update_notlisted_nontrans(), an 8-bit length wraps when two is added to a 255-byte MBSSID element, so a later memcpy writes 256 bytes beyond its allocation. The attacker must be within wireless range and able to inject frames; successful exploitation can crash the system or execute code in kernel context.
The record
- CVE
- CVE-2022-41674
- Published
- Oct 13, 2022
- Updated
- May 15, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1203
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 13, 2022CVE publishedPublication date reported by the CVE source.
- May 15, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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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