CVE-2023-52610

In the Linux kernel, the following vulnerability has been resolved: net/sched: actct: fix skb leak and crash on ooo frags actct adds skb-users before defragmentation. If frags arrive in order, the last frag's reference is reset in: inetfragreasmprepare skbmorph which is not straightforward. Howev...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

Important: kernel-livepatch-5.10.184-174.730

Issue Overview: A use-after-free vulnerability in the Linux kernel's net/sched: clsu32 component can be exploited to achieve local privilege escalation. If tcfchangeindev fails, u32setparms will immediately return an error after incrementing or decrementing the reference counter in tcfbindfilter...

CVE-2023-4208

A use-after-free vulnerability in the Linux kernel's net/sched: clsu32 component can be exploited to achieve local privilege escalation. When u32change is called on an existing filter, the whole tcfresult struct is always copied into the new instance of the filter. This causes a problem when...

kernel: net/sched: cbs NULL pointer dereference when offloading is enabled

A NULL pointer dereference flaw was found in the Linux kernel's network scheduler. This issue occurs when offloading is enabled, the cbs instance is not added to the list. The code also incorrectly handles the case when offload is disabled without removing the qdisc. This could allow a local user...