Bug 2370993 (CVE-2025-38003)

Summary: CVE-2025-38003 kernel: can: bcm: add missing rcu read protection for procfs content
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, mcascell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-06-08 11:01:10 UTC 
In the Linux kernel, the following vulnerability has been resolved:

can: bcm: add missing rcu read protection for procfs content

When the procfs content is generated for a bcm_op which is in the process
to be removed the procfs output might show unreliable data (UAF).

As the removal of bcm_op's is already implemented with rcu handling this
patch adds the missing rcu_read_lock() and makes sure the list entries
are properly removed under rcu protection.
Comment 1 Avinash Hanwate 2025-06-09 10:53:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025060859-CVE-2025-38003-6565@gregkh/T