Bug 2173434 (CVE-2023-1075) - CVE-2023-1075 kernel: net/tls: tls_is_tx_ready() checked list_entry
Summary: CVE-2023-1075 kernel: net/tls: tls_is_tx_ready() checked list_entry
Keywords:
Status: NEW
Alias: CVE-2023-1075
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2183538 2212175 2212176 2212177 2212178 2212179
Blocks: 2172923
TreeView+ depends on / blocked
 
Reported: 2023-02-26 17:06 UTC by Alex
Modified: 2024-04-17 15:48 UTC (History)
41 users (show)

Fixed In Version: kernel 6.1.11
Doc Type: If docs needed, set a value
Doc Text:
A memory leak flaw was found in the Linux kernel's TLS protocol. This issue could allow a local user unauthorized access to some memory.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2023:6835 0 None None None 2023-11-09 07:10:47 UTC
Red Hat Product Errata RHBA-2023:7268 0 None None None 2023-11-15 18:25:17 UTC
Red Hat Product Errata RHBA-2023:7328 0 None None None 2023-11-16 11:38:50 UTC
Red Hat Product Errata RHBA-2023:7338 0 None None None 2023-11-16 18:04:08 UTC
Red Hat Product Errata RHBA-2023:7343 0 None None None 2023-11-20 01:58:35 UTC
Red Hat Product Errata RHBA-2023:7346 0 None None None 2023-11-20 09:25:37 UTC
Red Hat Product Errata RHSA-2023:6583 0 None None None 2023-11-07 08:20:12 UTC
Red Hat Product Errata RHSA-2023:6901 0 None None None 2023-11-14 15:14:59 UTC
Red Hat Product Errata RHSA-2023:7077 0 None None None 2023-11-14 15:20:32 UTC
Red Hat Product Errata RHSA-2024:0575 0 None None None 2024-01-30 13:21:16 UTC
Red Hat Product Errata RHSA-2024:0724 0 None None None 2024-02-07 16:29:55 UTC

Description Alex 2023-02-26 17:06:10 UTC 
A flaw in the Linux Kernel found. The tls_is_tx_ready() incorrectly checks for list emptiness, potentially accessing a type confused entry to the list_head, leaking the last byte of the confused field that overlaps with rec->tx_ready.


Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ffe2a22562444720b05bdfeb999c03e810d84cbb
Comment 3 Alex 2023-06-04 14:25:00 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2212175]
Comment 5 Justin M. Forbes 2023-06-05 12:33:39 UTC 
This was fixed for Fedora with the 6.1.11 stable kernel updates.
Comment 7 errata-xmlrpc 2023-11-07 08:20:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6583 https://access.redhat.com/errata/RHSA-2023:6583
Comment 8 errata-xmlrpc 2023-11-14 15:14:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:6901 https://access.redhat.com/errata/RHSA-2023:6901
Comment 9 errata-xmlrpc 2023-11-14 15:20:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:7077 https://access.redhat.com/errata/RHSA-2023:7077
Comment 12 errata-xmlrpc 2024-01-30 13:21:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:0575 https://access.redhat.com/errata/RHSA-2024:0575
Comment 14 errata-xmlrpc 2024-02-07 16:29:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0724 https://access.redhat.com/errata/RHSA-2024:0724
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