Bug 1225731 (CVE-2024-36887) - VUL-0: CVE-2024-36887: kernel: e1000e: change usleep_range to udelay in PHY mdic access
Summary: VUL-0: CVE-2024-36887: kernel: e1000e: change usleep_range to udelay in PHY m...
Status: NEW
Alias: CVE-2024-36887
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/408144/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-36887:5.5:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-31 11:41 UTC by SMASH SMASH
Modified: 2024-07-08 15:08 UTC (History)
5 users (show)

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Found By: Security Response Team
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Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2024-05-31 11:41:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

e1000e: change usleep_range to udelay in PHY mdic access

This is a partial revert of commit 6dbdd4de0362 ("e1000e: Workaround
for sporadic MDI error on Meteor Lake systems"). The referenced commit
used usleep_range inside the PHY access routines, which are sometimes
called from an atomic context. This can lead to a kernel panic in some
scenarios, such as cable disconnection and reconnection on vPro systems.

Solve this by changing the usleep_range calls back to udelay.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-36887
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-36887.mbox
https://git.kernel.org/stable/c/f8a139656c95db893a543159873c57a470d7376d
https://git.kernel.org/stable/c/950d5226cd6bb83ba720961a8d4d5cf79e6afd57
https://git.kernel.org/stable/c/387f295cb2150ed164905b648d76dfcbd3621778
https://www.cve.org/CVERecord?id=CVE-2024-36887
Comment 6 Thomas Bogendoerfer 2024-07-01 12:55:51 UTC 
Backported fix to SLE15-SP6