Bug 2301488 (CVE-2024-42123)

Summary: CVE-2024-42123 kernel: drm/amdgpu: fix double free err_addr pointer warnings
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, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: kernel 6.9.9, kernel 6.10 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the amdgpu_umc_handle_bad_pages() function in the Linux kernel's amdgpu driver. If the function is called multiple times in quick succession, a double free error can occur because the err_data->err_addr pointer that is being freed is not being set to NULL in between calls. This could lead to memory corruption or crashes.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2301790    
Bug Blocks:    

Description OSIDB Bzimport 2024-07-30 08:33:50 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: fix double free err_addr pointer warnings

In amdgpu_umc_bad_page_polling_timeout, the amdgpu_umc_handle_bad_pages
will be run many times so that double free err_addr in some special case.
So set the err_addr to NULL to avoid the warnings.
Comment 1 Mauro Matteo Cascella 2024-07-30 19:18:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073025-CVE-2024-42123-056d@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 19:19:11 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301790]
Comment 10 errata-xmlrpc 2024-11-12 09:37:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315