Bug 2266808 (CVE-2021-46966) - CVE-2021-46966 kernel: ACPI: custom_method: fix potential use-after-free issue
Summary: CVE-2021-46966 kernel: ACPI: custom_method: fix potential use-after-free issue
Keywords:
Status: NEW
Alias: CVE-2021-46966
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2266809
Blocks: 2266839
TreeView+ depends on / blocked
 
Reported: 2024-02-29 06:37 UTC by Avinash Hanwate
Modified: 2024-06-20 11:17 UTC (History)
50 users (show)

Fixed In Version: kernel 4.4.269, kernel 4.9.269, kernel 4.14.233, kernel 4.19.191, kernel 5.4.118, kernel 5.10.36, kernel 5.11.20, kernel 5.12.3, kernel 5.13
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Avinash Hanwate 2024-02-29 06:37:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ACPI: custom_method: fix potential use-after-free issue

The Linux kernel CVE team has assigned CVE-2021-46966 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022720-CVE-2021-46966-1469@gregkh/T/#u
Comment 1 Avinash Hanwate 2024-02-29 06:37:56 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266809]
Comment 5 Justin M. Forbes 2024-03-01 22:34:08 UTC 
This was fixed for Fedora with the 5.11.20 stable kernel updates.
Comment 7 Alex 2024-06-09 16:25:19 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-46966 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags WRITE SIMPLEFIX LEAK ERRORPATH UAF  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.
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