CVE-2026-89524High· 8.1▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets ath6kl_cfg80211_connect_event() subtracts fixed IE offsets from assoc_req_len (-= 4) a…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 6.4
none → medium
— → 8.1
none → high
8.1 → 6.4
high → medium
6.4 → 8.1
medium → high
8.1 → 5.5
high → medium
0.2% → 0.4%
Last analysed / modified upstream
5.5 → 8.1
medium → high
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets
ath6kl_cfg80211_connect_event() subtracts fixed IE offsets from assoc_req_len (-= 4) and assoc_resp_len (-= 6), both u8, with no lower bound. The aggregate check recently added to ath6kl_wmi_connect_event_rx() bounds the declared lengths from above (their sum must fit the received event), but an assoc request/response shorter than its fixed offset still underflows here: the u8 wraps to ~250, and cfg80211_connect_result() / cfg80211_roamed() then treat that wrapped value as the IE length and copy that many bytes out of the small assoc_info buffer to user space via nl80211, disclosing adjacent slab memory.
Clamp both lengths to their offsets before subtracting.
Found by 0sec (https://0sec.ai) using automated source analysis; the missing lower bound is evident from source. Compile-tested.
Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 225587bdbf4b0eb5265a71ee4dc183561a1857fcLinux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < d337213a889705a69735079606d0b4c672b17605Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < e11d5ae96d5e52cb48fa27c6ad352d766d0322fbLinux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 6deb4d7a0c3d91821b2a8d5239e3d9933d9217d9Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < e3619bed5da125713b29ac881dc66f5e06606f88Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < e1330d719c047c4d8190a16be034b29fc601a815Linux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 8eb73016fb3968cf2db3987a92764563a3af773aLinux >= bdcd81707973cf8aa9305337166f8ee842a050d4 < 3bbd05723d15dd06f0560bcd94fbf9a91b5f5613Linux 3.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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