Bug 2367586 (CVE-2025-37963)

Summary: CVE-2025-37963 kernel: arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
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
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-20 17:02:12 UTC 
In the Linux kernel, the following vulnerability has been resolved:

arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users

Support for eBPF programs loaded by unprivileged users is typically
disabled. This means only cBPF programs need to be mitigated for BHB.

In addition, only mitigate cBPF programs that were loaded by an
unprivileged user. Privileged users can also load the same program
via eBPF, making the mitigation pointless.
Comment 1 Jon Moroney 2025-05-21 02:53:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052005-CVE-2025-37963-60f2@gregkh/T