Bug 2323922 (CVE-2024-50123)

Summary: CVE-2024-50123 kernel: bpf: Add the missing BPF_LINK_TYPE invocation for sockmap
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   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2324036    
Bug Blocks:    

Description OSIDB Bzimport 2024-11-05 18:02:23 UTC 
In the Linux kernel, the following vulnerability has been resolved:

bpf: Add the missing BPF_LINK_TYPE invocation for sockmap

There is an out-of-bounds read in bpf_link_show_fdinfo() for the sockmap
link fd. Fix it by adding the missing BPF_LINK_TYPE invocation for
sockmap link

Also add comments for bpf_link_type to prevent missing updates in the
future.
Comment 1 Robb Gatica 2024-11-05 21:19:47 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110556-CVE-2024-50123-5370@gregkh/T