Bug 2348307 (CVE-2022-49140)

Summary:	CVE-2022-49140 kernel: Revert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability-draft	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:		Doc Type:	If docs needed, set a value
Doc Text:	[REJECTED CVE] In the Linux kernel, the following vulnerability has been resolved: Revert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"	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:

Description OSIDB Bzimport 2025-02-26 03:24:52 UTC

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

Revert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"

This reverts commit 6d35d04a9e18990040e87d2bbf72689252669d54.

Both Gabriel and Borislav report that this commit casues a regression
with nbd:

sysfs: cannot create duplicate filename '/dev/block/43:0'

Revert it before 5.18-rc1 and we'll investigage this separately in
due time.

Comment 1 Avinash Hanwate 2025-02-26 13:26:54 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022607-CVE-2022-49140-974f@gregkh/T

Comment 4 Avinash Hanwate 2025-02-26 17:50:55 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022607-CVE-2022-49140-974f@gregkh/T

Comment 7 TEJ RATHI 2025-05-16 05:52:03 UTC

This CVE has been rejected upstream: https://lore.kernel.org/linux-cve-announce/2025022622-REJECTED-06e7@gregkh/