CVE-2022-49326
Realtek RTL818x Queue Initialization Vulnerability
Description
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.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
March 13, 2025, 9:50 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49326.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-49326 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49326 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 13, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-908 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 from (excluding) 5.4.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 from (excluding) 5.10.121 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.15.46 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 from (excluding) 5.17.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 from (excluding) 5.18.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 from (excluding) 4.14.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 4.9.318 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 from (excluding) 4.19.247 Added Reference Type kernel.org: https://git.kernel.org/stable/c/6ad81ad0cf5744738ce94c8e64051ddd80a1734c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/746285cf81dc19502ab238249d75f5990bd2d231 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/769ec2a824deae2f1268dfda14999a4d14d0d0c5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/98e55b0b876bde3353f4e074883d66ecb55c65a3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9ad1981fc4de3afb7db3e8eb5a6a52d4c7d0d577 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9d5e96cc1f1720019ce27b127a31695148d38bb0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b5dca2cd3f0239512da808598b4e70557eb4c2a1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b8ce58ab80faaea015c206382041ff3bcf5495ff Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d7e30dfc166d33470bba31a42f9bbc346e5409d5 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/6ad81ad0cf5744738ce94c8e64051ddd80a1734c Added Reference https://git.kernel.org/stable/c/746285cf81dc19502ab238249d75f5990bd2d231 Added Reference https://git.kernel.org/stable/c/769ec2a824deae2f1268dfda14999a4d14d0d0c5 Added Reference https://git.kernel.org/stable/c/98e55b0b876bde3353f4e074883d66ecb55c65a3 Added Reference https://git.kernel.org/stable/c/9ad1981fc4de3afb7db3e8eb5a6a52d4c7d0d577 Added Reference https://git.kernel.org/stable/c/9d5e96cc1f1720019ce27b127a31695148d38bb0 Added Reference https://git.kernel.org/stable/c/b5dca2cd3f0239512da808598b4e70557eb4c2a1 Added Reference https://git.kernel.org/stable/c/b8ce58ab80faaea015c206382041ff3bcf5495ff Added Reference https://git.kernel.org/stable/c/d7e30dfc166d33470bba31a42f9bbc346e5409d5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49326 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49326
weaknesses.