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CVE-2025-39849 is an out-of-bounds memory-corruption vulnerability in the Linux kernel Wi-Fi cfg80211 subsystem's SME connection-result handling. The __cfg80211_connect_result() function processed an SSID data length without enforcing the IEEE80211_MAX_SSID_LEN limit of 32 bytes. An SSID whose declared data length exceeds that maximum can cause memory corruption. The upstream fix adds bounds checking to cap the processed SSID length.
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No public exploit code observed for this vulnerability.
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14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel cfg80211 Wi-Fi flaw involving insufficient SSID-length handling in __cfg80211_connect_result().
Linux kernel Wi-Fi cfg80211 SME flaw involving insufficient SSID-length capping in __cfg80211_connect_result().
A Linux kernel Wi-Fi cfg80211 SME vulnerability addressed by bounding SSID length in __cfg80211_connect_result().
A Linux kernel Wi-Fi cfg80211 SME vulnerability related to insufficient SSID-length validation in __cfg80211_connect_result().
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.