CVE-2024-26683

published 2024-04-02

CVE-2024-26683: In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: detect stuck ECSA element in probe resp We recently added some validation…

Priority P4 19 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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

8 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.7.7-1 (forky)	linux 6.7.7-1 (forky)
linux	linux	—	—
linux	linux	>= c09c4f31998bac6d73508e38812518aceb069b68 < ce112c941c2b172afba3e913a90c380647d53975	ce112c941c2b172afba3e913a90c380647d53975
linux	linux	>= c09c4f31998bac6d73508e38812518aceb069b68 < 177fbbcb4ed6b306c1626a277fac3fb1c495a4c7	177fbbcb4ed6b306c1626a277fac3fb1c495a4c7
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 6.7.7-1	6.7.7-1
linux	linux_kernel	>= 0 < 6.7.7-1	6.7.7-1
linux	linux_kernel	>= 6.7 < 6.7.5	6.7.5

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 LOW

vendor_redhat 5.5 MEDIUM

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