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PUBLISHED

CVE-2024-26693

wifi: iwlwifi: mvm: fix a crash when we run out of stations

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-03

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix a crash when we run out of stations A DoS tool that injects loads of authentication frames made our AP crash. The iwl_mvm_is_dup() function couldn't find the per-queue dup_data which was not allocated. The root cause for that is that we ran out of stations in the firmware and we didn't really add the station to the firmware, yet we didn't return an error to mac80211. Mac80211 was thinking that we have the station and because of that, sta_info::uploaded was set to 1. This allowed ieee80211_find_sta_by_ifaddr() to return a valid station object, but that ieee80211_sta didn't have any iwl_mvm_sta object initialized and that caused the crash mentioned earlier when we got Rx on that station.

Product status

Default status
unaffected

57974a55d995 before 00f4eb31b819
affected

57974a55d995 before c12f0f4d4caf
affected

57974a55d995 before b7198383ef2d
affected

Default status
affected

6.4
affected

Any version before 6.4
unaffected

6.6.18
unaffected

6.7.6
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/00f4eb31b8193f6070ce24df636883f9c104ca95

https://git.kernel.org/stable/c/c12f0f4d4caf23b1bfdc2602b6b70d56bdcd6aa7

https://git.kernel.org/stable/c/b7198383ef2debe748118996f627452281cf27d7

cve.org CVE-2024-26693

nvd.nist.gov CVE-2024-26693

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