Bug 2300456 (CVE-2024-41079)

Summary: CVE-2024-41079 kernel: nvmet: always initialize cqe.result
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 6.1.101, kernel 6.6.42, kernel 6.9.11, kernel 6.10 Doc Type: If docs needed, set a value
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2301649    
Bug Blocks:    

Description OSIDB Bzimport 2024-07-29 15:51:22 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nvmet: always initialize cqe.result

The spec doesn't mandate that the first two double words (aka results)
for the command queue entry need to be set to 0 when they are not
used (not specified). Though, the target implemention returns 0 for TCP
and FC but not for RDMA.

Let's make RDMA behave the same and thus explicitly initializing the
result field. This prevents leaking any data from the stack.
Comment 1 Mauro Matteo Cascella 2024-07-30 14:07:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024072925-CVE-2024-41079-09c3@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 14:08:20 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301649]
Comment 11 errata-xmlrpc 2024-11-12 09:37:16 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