Bug 2281738 (CVE-2024-35871)

Summary:	CVE-2024-35871 kernel: riscv: process: Fix kernel gp leakage
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.10.216, kernel 5.15.154, kernel 6.1.85, kernel 6.6.26, kernel 6.8.5, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel affecting the RISC-V architecture, where the kernel global pointer (`gp`) can be leaked to user space. This issue occurs when a user-mode helper thread, such as `/sbin/init`) starts a new process via `execve` without clearing the kernel registers, allowing sensitive kernel memory values, like the `gp`, to be exposed. The vulnerability can be exploited via debugging interfaces such as `ptrace` or by accessing `/proc//task//syscall`.	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:	2281739
Bug Blocks:	2281792

Description ybuenos 2024-05-20 13:16:00 UTC

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

riscv: process: Fix kernel gp leakage

The Linux kernel CVE team has assigned CVE-2024-35871 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051941-CVE-2024-35871-2db0@gregkh/T

Comment 1 ybuenos 2024-05-20 13:16:41 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281739]

Comment 2 Alex 2024-06-09 14:10:08 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35871 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown	 (where first YES/NO value means if related sources built).