Bug 2250843 (CVE-2023-6240)

Summary:	CVE-2023-6240 kernel: Marvin vulnerability side-channel leakage in the RSA decryption operation
Product:	[Other] Security Response	Reporter:	Rohit Keshri <rkeshri>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, ajmitchell, allarkin, anprice, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, ezulian, hkrzesin, ikent, jarod, jburrell, jdenham, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rogbas, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, security-response-team, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.	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:	2262644
Bug Blocks:	2250781

Description Rohit Keshri 2023-11-21 12:31:22 UTC

A flaw found that is Marvin Attack vulnerability side-channel leakage in the RSA decryption operation.

References:
https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/
https://people.redhat.com/~hkario/marvin/

Comment 5 Alex 2024-02-04 13:47:10 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2262644]

Comment 7 errata-xmlrpc 2024-04-18 01:47:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1882 https://access.redhat.com/errata/RHSA-2024:1882

Comment 8 errata-xmlrpc 2024-04-18 02:28:09 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1881 https://access.redhat.com/errata/RHSA-2024:1881

Comment 9 errata-xmlrpc 2024-05-08 00:47:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2758 https://access.redhat.com/errata/RHSA-2024:2758