Bug 2324875 (CVE-2024-50215)

Summary: CVE-2024-50215 kernel: nvmet-auth: assign dh_key to NULL after kfree_sensitive
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2325096    
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Description OSIDB Bzimport 2024-11-09 11:02:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nvmet-auth: assign dh_key to NULL after kfree_sensitive

ctrl->dh_key might be used across multiple calls to nvmet_setup_dhgroup()
for the same controller. So it's better to nullify it after release on
error path in order to avoid double free later in nvmet_destroy_auth().

Found by Linux Verification Center (linuxtesting.org) with Svace.
Comment 1 Avinash Hanwate 2024-11-11 05:28:07 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110924-CVE-2024-50215-0155@gregkh/T
Comment 2 errata-xmlrpc 2025-05-13 08:34:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966