Bug 2294295 (CVE-2024-39463)

Summary:	CVE-2024-39463 kernel: 9p: add missing locking around taking dentry fid list
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	dfreiber, drow, jburrell, rkeshri, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.1.94, kernel 6.6.34, kernel 6.9.5, kernel 6.10-rc2	Doc Type:	If docs needed, set a value
Doc Text:	A potential use-after-free on dentry's d_fsdata fid list was found in the Linux kernel.This happens, when a thread looks up a fid through dentry while another thread unlinks it. This may lead to information leak or a crash.	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:	2294296
Bug Blocks:	2294292

Description Pedro Sampaio 2024-06-25 20:24:59 UTC

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

9p: add missing locking around taking dentry fid list

The Linux kernel CVE team has assigned CVE-2024-39463 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024062513-CVE-2024-39463-42c8@gregkh/T

Comment 1 Pedro Sampaio 2024-06-25 20:25:17 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2294296]