CVE-2026-98704

CVE-2026-98704

published October 18, 2026

CVSS
—
EPSS
0%
Percentile
5.7
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: keep fallback association elements alive

Associating to a non-transmitted MBSSID profile reads freed memory while

determining the operating channel and applying HT capabilities.

When an association response omits WMM, HT, or VHT information,

ieee80211_assoc_config_link() parses the cached BSS IEs and copies the

missing element pointers out of that fallback parse. For a

non-transmitted MBSSID profile those pointers refer to merged-profile

storage owned by the parse object, and the fallback block frees that

object at its end. The copied pointers are used afterwards to determine

the operating channel, configure bandwidth, and apply HT capabilities.

Keep the fallback parse result alive until association setup finishes.

[reorder variable declaration]

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00168 · 5.7th percentile
Published
2026-10-18T20:17Z
References (5)
EPSS history
Timeline
  • 20 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 18 OCT 15:46Z
    wifi: mac80211: keep fallback association elements alive
    cvelistv5
  • 18 OCT 15:46Z
    wifi: mac80211: keep fallback association elements alive
    cvelistv5