Bug 2092613 (CVE-2022-28736) - CVE-2022-28736 grub2: use-after-free in grub_cmd_chainloader()
Summary: CVE-2022-28736 grub2: use-after-free in grub_cmd_chainloader()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-28736
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: 2092620 2092621 2092622 2092623 2092624 2092625 2092627
Blocks: 1991681
TreeView+ depends on / blocked
 
Reported: 2022-06-01 20:42 UTC by Marco Benatto
Modified: 2023-12-28 14:02 UTC (History)
8 users (show)

Fixed In Version: grub 2.12
Clone Of:
Environment:
Last Closed: 2022-06-16 22:37:10 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2022:5105 0 None None None 2022-06-16 21:08:45 UTC
Red Hat Product Errata RHBA-2022:5121 0 None None None 2022-06-20 01:27:36 UTC
Red Hat Product Errata RHBA-2022:5127 0 None None None 2022-06-20 12:12:18 UTC
Red Hat Product Errata RHBA-2022:5128 0 None None None 2022-06-20 14:27:12 UTC
Red Hat Product Errata RHBA-2022:5170 0 None None None 2022-06-22 11:38:44 UTC
Red Hat Product Errata RHBA-2022:5437 0 None None None 2022-06-30 07:15:25 UTC
Red Hat Product Errata RHBA-2022:5578 0 None None None 2022-07-13 15:10:23 UTC
Red Hat Product Errata RHBA-2022:5643 0 None None None 2022-07-19 15:32:32 UTC
Red Hat Product Errata RHSA-2022:5095 0 None None None 2022-06-16 15:34:15 UTC
Red Hat Product Errata RHSA-2022:5096 0 None None None 2022-06-16 14:56:00 UTC
Red Hat Product Errata RHSA-2022:5098 0 None None None 2022-06-16 13:51:40 UTC
Red Hat Product Errata RHSA-2022:5099 0 None None None 2022-06-16 15:24:12 UTC
Red Hat Product Errata RHSA-2022:5100 0 None None None 2022-06-16 15:46:25 UTC

Description Marco Benatto 2022-06-01 20:42:37 UTC 
There's a use-after-free vulnerability in grub_cmd_chainloader() function. The chainloader command is used to boot up Operating Systems that doesn't support multiboot and do not have direct support from grub2, when executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the grub's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be executed.
Comment 2 errata-xmlrpc 2022-06-16 13:51:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

Via RHSA-2022:5098 https://access.redhat.com/errata/RHSA-2022:5098
Comment 3 errata-xmlrpc 2022-06-16 14:55:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Extended Update Support

Via RHSA-2022:5096 https://access.redhat.com/errata/RHSA-2022:5096
Comment 4 errata-xmlrpc 2022-06-16 15:24:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2022:5099 https://access.redhat.com/errata/RHSA-2022:5099
Comment 5 errata-xmlrpc 2022-06-16 15:34:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:5095 https://access.redhat.com/errata/RHSA-2022:5095
Comment 6 errata-xmlrpc 2022-06-16 15:46:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2022:5100 https://access.redhat.com/errata/RHSA-2022:5100
Comment 7 Product Security DevOps Team 2022-06-16 22:37:08 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-2022-28736
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