Bug 2144991 (CVE-2022-4095) - CVE-2022-4095 kernel: Use-after-Free/Double-Free bug in read_bbreg_hdl in drivers/staging/rtl8712/rtl8712_cmd.c
Summary: CVE-2022-4095 kernel: Use-after-Free/Double-Free bug in read_bbreg_hdl in dri...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2022-4095
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: 2144992
Blocks: 2144993
TreeView+ depends on / blocked
 
Reported: 2022-11-22 20:34 UTC by Pedro Sampaio
Modified: 2022-12-07 23:33 UTC (History)
36 users (show)

Fixed In Version: kernel 6.0 rc4
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in Linux kernel before 5.19.2. This issue occurs in cmd_hdl_filter in drivers/staging/rtl8712/rtl8712_cmd.c, allowing an attacker to launch a local denial of service attack and gain escalation of privileges.
Clone Of:
Environment:
Last Closed: 2022-12-07 23:33:08 UTC
Embargoed:

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Description Pedro Sampaio 2022-11-22 20:34:49 UTC 
A use after free issue was found in linux kernel before 5.19.2, in cmd_hdl_filter in drivers/staging/rtl8712/rtl8712_cmd.c that allows an attacker to launch a local denial of service attack and gain escalation of privileges.

References:

https://seclists.org/oss-sec/2022/q4/149
https://lore.kernel.org/all/20220906132823.157986856
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c53b3dcb9942b8ed7f81ee3921c4085d87070c73
Comment 1 Pedro Sampaio 2022-11-22 20:35:14 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2144992]
Comment 3 Justin M. Forbes 2022-11-30 19:59:38 UTC 
This was fixed for Fedora with the 5.19.8 stable kernel updates.
Comment 4 Product Security DevOps Team 2022-12-07 23:33:05 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-2022-4095
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