Bug 2300414 (CVE-2024-41044)

Summary:	CVE-2024-41044 kernel: ppp: reject claimed-as-LCP but actually malformed packets
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 4.19.318, kernel 5.4.280, kernel 5.10.222, kernel 5.15.163, kernel 6.1.100, kernel 6.6.41, kernel 6.9.10, kernel 6.10	Doc Type:	If docs needed, set a value
Doc Text:	The vulnerability was found in the Linux kernel's ppp ppp_generic.c driver, in the ppp_read() and ppp_write() functions where malformed packets were erroneously identified as LCP packets, leading to potential issues with packet handling. This flaw could potentially lead to system instability.	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:	2301572
Bug Blocks:

Description OSIDB Bzimport 2024-07-29 15:34:20 UTC

In the Linux kernel, the following vulnerability has been resolved:

ppp: reject claimed-as-LCP but actually malformed packets

Since 'ppp_async_encode()' assumes valid LCP packets (with code
from 1 to 7 inclusive), add 'ppp_check_packet()' to ensure that
LCP packet has an actual body beyond PPP_LCP header bytes, and
reject claimed-as-LCP but actually malformed data otherwise.

Comment 1 Mauro Matteo Cascella 2024-07-30 09:56:37 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024072925-CVE-2024-41044-5b26@gregkh/T

Comment 2 Mauro Matteo Cascella 2024-07-30 09:56:57 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301572]

Comment 10 errata-xmlrpc 2024-09-04 00:11:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:6268 https://access.redhat.com/errata/RHSA-2024:6268

Comment 11 errata-xmlrpc 2024-09-04 00:25:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:6267 https://access.redhat.com/errata/RHSA-2024:6267

Comment 12 errata-xmlrpc 2024-09-11 01:01:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:6567 https://access.redhat.com/errata/RHSA-2024:6567

Comment 13 errata-xmlrpc 2024-09-24 00:39:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:7001 https://access.redhat.com/errata/RHSA-2024:7001

Comment 14 errata-xmlrpc 2024-09-24 01:14:57 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:6993 https://access.redhat.com/errata/RHSA-2024:6993

Comment 15 errata-xmlrpc 2024-09-24 02:35:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:7000 https://access.redhat.com/errata/RHSA-2024:7000