Bug 1875840 (CVE-2020-29370)

Summary:	CVE-2020-29370 kernel: Race condition in SLUB bulk alloc slowpath
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
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, airlied, bhu, blc, bmasney, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, gsuckevi, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mcressma, mjg59, mlangsdo, nmurray, pmatouse, ptalbert, qzhao, rt-maint, rvrbovsk, steved, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw memory corruption in the Linux kernel slub memory allocator subsystem was found in the way if race condition happens during memory allocation. A local user potentially could use this flaw to corrupt the memory with the double usage of the same memory object by different threads as result.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-18 08:41:13 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:	1870587, 1903280

Description Pedro Sampaio 2020-09-04 14:02:22 UTC

A flaw was found in Linux kernel. A race condition in SLUB bulk alloc may lead to it to return the same object for two allocations.

References:

https://bugs.chromium.org/p/project-zero/issues/detail?id=2022

Comment 4 Alex 2020-09-21 20:16:17 UTC

Acknowledgments:

Name: Jann Horn (Google)

Comment 5 Petr Matousek 2020-12-10 12:51:47 UTC

*** Bug 1903278 has been marked as a duplicate of this bug. ***