Bug 2406197 (CVE-2023-53733)

Summary: CVE-2023-53733 kernel: net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-10-24 12:01:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode

When u32_replace_hw_knode fails, we need to undo the tcf_bind_filter
operation done at u32_set_parms.
Comment 1 Jon Moroney 2025-10-24 16:30:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102432-CVE-2023-53733-8b6c@gregkh/T