Bug 2106098 (CVE-2021-39711)

Summary:	CVE-2021-39711 kernel: out-of-bounds read due to Incorrect size value in bpf_prog_test_run_skb() of test_run.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bhu, bskeggs, chwhite, crwood, ddepaula, dhoward, dvlasenk, fhrbata, hdegoede, hkrzesin, hpa, jarod, jarodwilson, jburrell, jfaracco, jferlan, jforbes, jglisse, jlelli, joe.lawrence, jonathan, josef, jshortt, jstancek, jwboyer, jwyatt, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, lzampier, masami256, mchehab, nmurray, ptalbert, qzhao, rvrbovsk, scweaver, steved, tyberry, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 4.18 rc6	Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds (OOB) read flaw was found in bpf_prog_test_run_skb in the net/bpf/test_run.c function due to an incorrect Size Value in the Linux kernel.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-08-31 04:55:53 UTC	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:
Bug Blocks:	2106100

Description Guilherme de Almeida Suckevicz 2022-07-11 18:57:34 UTC

In bpf_prog_test_run_skb of test_run.c, there is a possible out of bounds read due to Incorrect Size Value. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-154175781References: Upstream kernel

Reference:
https://source.android.com/security/bulletin/pixel/2022-03-01

Comment 6 Rohit Keshri 2022-08-02 19:13:38 UTC

There was no shipped kernel version that was seen affected by this problem.

Comment 7 Product Security DevOps Team 2022-08-31 04:55:50 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-39711