Bug 2213455 (CVE-2023-21102) - CVE-2023-21102 kernel: bypass of shadow stack protection due to a logic error
Summary: CVE-2023-21102 kernel: bypass of shadow stack protection due to a logic error
Keywords:
Status: NEW
Alias: CVE-2023-21102
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2213498 2213499 2213500 2213501 2213502 2213503 2213504 2213505 2213506 2213507 2213508 2213509 2213510 2213511 2213512 2214493
Blocks: 2208266
TreeView+ depends on / blocked
 
Reported: 2023-06-08 08:01 UTC by Rohit Keshri
Modified: 2024-01-17 10:06 UTC (History)
45 users (show)

Fixed In Version: Kernel 6.2-rc1
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the __efi_rt_asm_wrapper of the efi-rt-wrapper.S in the Linux kernel, where there is a possible bypass of shadow stack protection due to a logic error in the code. This flaw could lead to local escalation of privilege without additional execution privileges needed.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2023:5162 0 None None None 2023-09-14 08:11:41 UTC
Red Hat Product Errata RHSA-2023:5069 0 None None None 2023-09-12 10:14:07 UTC
Red Hat Product Errata RHSA-2023:5091 0 None None None 2023-09-12 09:50:48 UTC

Description Rohit Keshri 2023-06-08 08:01:11 UTC 
In __efi_rt_asm_wrapper of efi-rt-wrapper.S, there is a possible bypass of shadow stack protection due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed.

Reference:
https://android.googlesource.com/kernel/common/+/ec6fe823507b2f6ef4a58f3a9bee9a5ec086c32c%5E%21/
https://source.android.com/docs/security/bulletin/2023-05-01
Comment 8 errata-xmlrpc 2023-09-12 09:50:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5091 https://access.redhat.com/errata/RHSA-2023:5091
Comment 9 errata-xmlrpc 2023-09-12 10:14:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5069 https://access.redhat.com/errata/RHSA-2023:5069
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