cbcvebase.
CVE-2022-49326
published 2025-02-26

CVE-2022-49326: In the Linux kernel, the following vulnerability has been resolved: rtl818x: Prevent using not initialized queues Using not existing queues can panic the…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.29%
21.2th percentile
In the Linux kernel, the following vulnerability has been resolved: rtl818x: Prevent using not initialized queues Using not existing queues can panic the kernel with rtl8180/rtl8185 cards. Ignore the skb priority for those cards, they only have one tx queue. Pierre Asselin ([email protected]) reported the kernel crash in the Gentoo forum: https://forums.gentoo.org/viewtopic-t-1147832-postdays-0-postorder-asc-start-25.html He also confirmed that this patch fixes the issue. In summary this happened: After updating wpa_supplicant from 2.9 to 2.10 the kernel crashed with a "divide error: 0000" when connecting to an AP. Control port tx now tries to use IEEE80211_AC_VO for the priority, which wpa_supplicants starts to use in 2.10. Since only the rtl8187se part of the driver supports QoS, the priority of the skb is set to IEEE80211_AC_BE (2) by mac80211 for rtl8180/rtl8185 cards. rtl8180 is then unconditionally reading out the priority and finally crashes on drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c line 544 without this patch: idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries "ring->entries" is zero for rtl8180/rtl8185 cards, tx_ring[2] never got initialized.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.18.5-1 (bookworm)linux 5.18.5-1 (bookworm)
linuxlinux——
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < b5dca2cd3f0239512da808598b4e70557eb4c2a1b5dca2cd3f0239512da808598b4e70557eb4c2a1
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < d7e30dfc166d33470bba31a42f9bbc346e5409d5d7e30dfc166d33470bba31a42f9bbc346e5409d5
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < 9d5e96cc1f1720019ce27b127a31695148d38bb09d5e96cc1f1720019ce27b127a31695148d38bb0
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < b8ce58ab80faaea015c206382041ff3bcf5495ffb8ce58ab80faaea015c206382041ff3bcf5495ff
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < 769ec2a824deae2f1268dfda14999a4d14d0d0c5769ec2a824deae2f1268dfda14999a4d14d0d0c5
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < 6ad81ad0cf5744738ce94c8e64051ddd80a1734c6ad81ad0cf5744738ce94c8e64051ddd80a1734c
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < 9ad1981fc4de3afb7db3e8eb5a6a52d4c7d0d5779ad1981fc4de3afb7db3e8eb5a6a52d4c7d0d577
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < 98e55b0b876bde3353f4e074883d66ecb55c65a398e55b0b876bde3353f4e074883d66ecb55c65a3
linuxlinux>= fd6564fcdc0bfcd432e6e939f9538acc3905d08a < 746285cf81dc19502ab238249d75f5990bd2d231746285cf81dc19502ab238249d75f5990bd2d231
linuxlinux_kernel< 4.9.3184.9.318
linuxlinux_kernel>= 0 < 5.10.127-15.10.127-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 4.10 < 4.14.2834.14.283
linuxlinux_kernel>= 4.15 < 4.19.2474.19.247
linuxlinux_kernel>= 4.20 < 5.4.1985.4.198
linuxlinux_kernel>= 5.11 < 5.15.465.15.46
linuxlinux_kernel>= 5.16 < 5.17.145.17.14
linuxlinux_kernel>= 5.18 < 5.18.35.18.3
linuxlinux_kernel>= 5.5 < 5.10.1215.10.121

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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