Bug 2173434 (CVE-2023-1075)

Summary:	CVE-2023-1075 kernel: net/tls: tls_is_tx_ready() checked list_entry
Product:	[Other] Security Response	Reporter:	Alex <allarkin>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, arachman, bhu, chwhite, crwood, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, fhrbata, hkrzesin, jarod, jburrell, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, kyoshida, lgoncalv, lveyde, lzampier, michal.skrivanek, mperina, nmurray, ptalbert, qzhao, rogbas, rvrbovsk, scweaver, tyberry, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2183538, 2212175, 2212176, 2212177, 2212178, 2212179
Bug Blocks:	2172923

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