CVE-2022-49326
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/02/2025
Last modified:
13/03/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
rtl818x: Prevent using not initialized queues<br />
<br />
Using not existing queues can panic the kernel with rtl8180/rtl8185 cards.<br />
Ignore the skb priority for those cards, they only have one tx queue. Pierre<br />
Asselin (pa@panix.com) reported the kernel crash in the Gentoo forum:<br />
<br />
https://forums.gentoo.org/viewtopic-t-1147832-postdays-0-postorder-asc-start-25.html<br />
<br />
He also confirmed that this patch fixes the issue. In summary this happened:<br />
<br />
After updating wpa_supplicant from 2.9 to 2.10 the kernel crashed with a<br />
"divide error: 0000" when connecting to an AP. Control port tx now tries to<br />
use IEEE80211_AC_VO for the priority, which wpa_supplicants starts to use in<br />
2.10.<br />
<br />
Since only the rtl8187se part of the driver supports QoS, the priority<br />
of the skb is set to IEEE80211_AC_BE (2) by mac80211 for rtl8180/rtl8185<br />
cards.<br />
<br />
rtl8180 is then unconditionally reading out the priority and finally crashes on<br />
drivers/net/wireless/realtek/rtl818x/rtl8180/dev.c line 544 without this<br />
patch:<br />
idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries<br />
<br />
"ring->entries" is zero for rtl8180/rtl8185 cards, tx_ring[2] never got<br />
initialized.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.9.318 (excluding) | |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.10 (including) | 4.14.283 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.15 (including) | 4.19.247 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.20 (including) | 5.4.198 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.5 (including) | 5.10.121 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.11 (including) | 5.15.46 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 (including) | 5.17.14 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.18 (including) | 5.18.3 (excluding) |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/6ad81ad0cf5744738ce94c8e64051ddd80a1734c
- https://git.kernel.org/stable/c/746285cf81dc19502ab238249d75f5990bd2d231
- https://git.kernel.org/stable/c/769ec2a824deae2f1268dfda14999a4d14d0d0c5
- https://git.kernel.org/stable/c/98e55b0b876bde3353f4e074883d66ecb55c65a3
- https://git.kernel.org/stable/c/9ad1981fc4de3afb7db3e8eb5a6a52d4c7d0d577
- https://git.kernel.org/stable/c/9d5e96cc1f1720019ce27b127a31695148d38bb0
- https://git.kernel.org/stable/c/b5dca2cd3f0239512da808598b4e70557eb4c2a1
- https://git.kernel.org/stable/c/b8ce58ab80faaea015c206382041ff3bcf5495ff
- https://git.kernel.org/stable/c/d7e30dfc166d33470bba31a42f9bbc346e5409d5