CVE-2024-26683

Summary

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

wifi: cfg80211: detect stuck ECSA element in probe resp

We recently added some validation that we don't try to connect to an AP that is currently in a channel switch process, since that might want the channel to be quiet or we might not be able to connect in time to hear the switching in a beacon. This was in commit c09c4f31998b ("wifi: mac80211: don't connect to an AP while it's in a CSA process").

However, we promptly got a report that this caused new connection failures, and it turns out that the AP that we now cannot connect to is permanently advertising an extended channel switch announcement, even with quiet. The AP in question was an Asus RT-AC53, with firmware 3.0.0.4.380_10760-g21a5898.

As a first step, attempt to detect that we're dealing with such a situation, so mac80211 can use this later.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc09c4f31998bac6d73508e38812518aceb069b68 < ce112c941c2b172afba3e913a90c380647d53975affected
LinuxLinuxc09c4f31998bac6d73508e38812518aceb069b68 < 177fbbcb4ed6b306c1626a277fac3fb1c495a4c7affected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux6.7.5 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References