Hi,

The following vulnerability was published for rccl.

CVE-2026-43598[0]:
| Improper input validation in the AMD ROCm Communication Collectives
| Library (RCCL) could allow a compromised peer rank or network-
| adjacent attacker to dereference an attacker-controlled pointer,
| potentially resulting in remote code execution.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-43598
https://www.cve.org/CVERecord?id=CVE-2026-43598
[1] https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6033.html

Regards,
Salvatore

Thank you, Salvatore.

I'd never seen a CVE before on a ROCm package, so it's taken some time
to understand the process. The bug was fixed upstream in ROCm 7.14. I've
confirmed the commit for the upstream fix [1], but have not yet verified
if this bug affects ROCm 5.4.3, or if it is feasible to backport the fix.

Sincerely,
Cory Bloor

[1]:
https://github.com/ROCm/rocm-systems/commit/ccba298bcfb644246e07b1137e948a4cab60eb29