Bug 2084125 (CVE-2022-1679) - CVE-2022-1679 kernel: use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges
Summary: CVE-2022-1679 kernel: use-after-free in ath9k_htc_probe_device() could cause ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-1679
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2084598 2084599 2084600 2084601 2086288 2125518 2125621
Blocks: 2083440 2084412
TreeView+ depends on / blocked
 
Reported: 2022-05-11 13:33 UTC by Alex
Modified: 2024-02-13 01:11 UTC (History)
46 users (show)

Fixed In Version: Linux kernel 5.18-rc7
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel’s Atheros wireless adapter driver in the way a user forces the ath9k_htc_wait_for_target function to fail with some input messages. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Clone Of:
Environment:
Last Closed: 2023-05-16 18:51:24 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:7933 0 None None None 2022-11-15 09:45:04 UTC
Red Hat Product Errata RHSA-2022:8267 0 None None None 2022-11-15 10:47:57 UTC
Red Hat Product Errata RHSA-2023:2736 0 None None None 2023-05-16 08:04:26 UTC
Red Hat Product Errata RHSA-2023:2951 0 None None None 2023-05-16 08:33:18 UTC
Red Hat Product Errata RHSA-2024:0412 0 None None None 2024-01-24 16:42:24 UTC

Description Alex 2022-05-11 13:33:50 UTC 
A vulnerability was found in ath9k_htc_probe_device in drivers/net/wireless/ath/ath9k/htc_drv_init.c in the Linux kernel. In this flaw, a local user may gain access to kernel memory, leading to a system crash or a leak of internal kernel information.
In more details. After ieee80211_alloc_hw executes finished, it saves variable priv into htc_handle->drv_priv. Then, if function ath9k_htc_wait_for_target executes failed, it directly frees variable hw by function ieee80211_free_hw, but it doesn't clear htc_handle->drv_priv. At now, the usb communication channel has been established. Function ath9k_hif_usb_rx_stream is used to process received messages. It calls macro RX_STAT_INC to count packets' number. And this macro uses htc_handle->drv_priv which has been freed before.

Reference:
https://lore.kernel.org/lkml/87ilqc7jv9.fsf@kernel.org/t/
Comment 3 Alex 2022-05-15 10:59:11 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2086288]
Comment 10 Justin M. Forbes 2022-09-23 19:04:18 UTC 
This was fixed for Fedora with the 5.18.18 stable kernel update.
Comment 11 errata-xmlrpc 2022-11-15 09:45:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:7933 https://access.redhat.com/errata/RHSA-2022:7933
Comment 12 errata-xmlrpc 2022-11-15 10:47:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:8267 https://access.redhat.com/errata/RHSA-2022:8267
Comment 16 errata-xmlrpc 2023-05-16 08:04:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2736 https://access.redhat.com/errata/RHSA-2023:2736
Comment 17 errata-xmlrpc 2023-05-16 08:33:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2951 https://access.redhat.com/errata/RHSA-2023:2951
Comment 18 Product Security DevOps Team 2023-05-16 18:51:21 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-1679
Comment 20 errata-xmlrpc 2024-01-24 16:42:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0412 https://access.redhat.com/errata/RHSA-2024:0412
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