1224478 – (CVE-2024-35918) VUL-0: CVE-2024-35918: kernel: randomize_kstack: Improve entropy diffusion

Bug 1224478 (CVE-2024-35918) - VUL-0: CVE-2024-35918: kernel: randomize_kstack: Improve entropy diffusion

Summary: VUL-0: CVE-2024-35918: kernel: randomize_kstack: Improve entropy diffusion

Status:	NEW

Alias:	CVE-2024-35918

Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents (show other bugs)
Version:	unspecified
Hardware:	Other Other

Priority:	P3 - Medium Severity: Normal
Target Milestone:	---
Assignee:	Michal Koutný
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/406608/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-35918:5.5:(AV:...
Keywords:

Depends on:
Blocks:

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Reported:	2024-05-20 13:01 UTC by SMASH SMASH
Modified:	2024-05-22 09:05 UTC (History)
CC List:	5 users (show)

See Also:
Found By:	Security Response Team
Services Priority:
Business Priority:
Blocker:	---
Marketing QA Status:	---
IT Deployment:	---

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Description SMASH SMASH 2024-05-20 13:01:18 UTC

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

randomize_kstack: Improve entropy diffusion

The kstack_offset variable was really only ever using the low bits for
kernel stack offset entropy. Add a ror32() to increase bit diffusion.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-35918
https://www.cve.org/CVERecord?id=CVE-2024-35918
https://git.kernel.org/stable/c/300a2b9c2b28282974ee300bb5d5025cbbb1f64c
https://git.kernel.org/stable/c/6be74b1e21f8de4c48af772c2f658b464bfe6145
https://git.kernel.org/stable/c/9c573cd313433f6c1f7236fe64b9b743500c1628
https://git.kernel.org/stable/c/dfb2ce952143de60dd756ed666901236c76cb3fa
https://git.kernel.org/stable/c/e80b4980af2688d8ff69c157ffa773dd1f1eb02c
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-35918.mbox

Comment 1 Joey Lee 2024-05-21 13:10:42 UTC

https://www.suse.com/security/cve/CVE-2024-35918.html
cvss 5.5