Bug 2301476 (CVE-2024-42113)

Summary:	CVE-2024-42113 kernel: net: txgbe: initialize num_q_vectors for MSI/INTx interrupts
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 6.6.39, kernel 6.9.9, kernel 6.10	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel's `txgbe` driver involving uninitialized `num_q_vectors` when using MSI/INTx interrupts. This can lead to kernel panics during the allocation of queue vectors due to the use of undefined values. This issue was resolved by ensuring `num_q_vectors` is properly initialized, thereby preventing system crashes and enhancing overall stability.	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:	2301778
Bug Blocks:

Description OSIDB Bzimport 2024-07-30 08:31:23 UTC

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

net: txgbe: initialize num_q_vectors for MSI/INTx interrupts

When using MSI/INTx interrupts, wx->num_q_vectors is uninitialized.
Thus there will be kernel panic in wx_alloc_q_vectors() to allocate
queue vectors.

Comment 1 Mauro Matteo Cascella 2024-07-30 18:54:41 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073022-CVE-2024-42113-be53@gregkh/T

Comment 2 Mauro Matteo Cascella 2024-07-30 18:55:02 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301778]