Bug 2373426 (CVE-2022-49988)

Summary:	CVE-2022-49988 kernel: binder_alloc: add missing mmap_lock calls when using the VMA
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:	---
Doc Text:	[REJECTED CVE] In the Linux kernel, the following vulnerability has been resolved: binder_alloc: add missing mmap_lock calls when using the VMA	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 2025-06-18 12:02:19 UTC

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

binder_alloc: add missing mmap_lock calls when using the VMA

Take the mmap_read_lock() when using the VMA in binder_alloc_print_pages()
and when checking for a VMA in binder_alloc_new_buf_locked().

It is worth noting binder_alloc_new_buf_locked() drops the VMA read lock
after it verifies a VMA exists, but may be taken again deeper in the call
stack, if necessary.

Comment 1 Avinash Hanwate 2025-06-20 09:16:32 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025061823-CVE-2022-49988-d597@gregkh/T

Comment 3 TEJ RATHI 2025-08-20 11:53:11 UTC

This CVE has been rejected by the Linux kernel community. Refer to the announcement: https://lore.kernel.org/linux-cve-announce/2025061812-REJECTED-4c48@gregkh/

Comment added by: Automated Script