Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: fou: Do not allow the value 0 for FOUATTRIPPROTO. The function fouudprecv has the same issue mentioned in the previous patch. If FOUATTRIPPROTO is set to 0, the buffer skb is neither freed by fouudprecv nor sent via "resubmit"-ed...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: “fou”: removed the warning in guegroreceive for unsupported protocols. The warning for guegroreceive is removed if the encapsulated type is unknown or does not have a GRO handler. Such packets can be easily constructed. The Syzbo...

CVE-2026-23083

In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOUATTRIPPROTO. fouudprecv has the same problem mentioned in the previous patch. If FOUATTRIPPROTO is set to 0, skb is not freed by fouudprecv nor "resubmit"-ted in ipprotocoldeliverrcu. Let's forbid 0 for...

CVE-2026-23083

CVE-2026-23083 is a Linux kernel vulnerability affecting FOU (IPv4/IPv6 over UDP) handling, where setting FOU_ATTR_IPPROTO to 0 could leave the skb unfreed in fou_udp_recv() and not retried in ip_protocol_deliver_rcu(). The fix suppresses 0 for FOU_ATTR_IPPROTO and applies upstream patching to pr...

AZL-49584 CVE-2024-46763 affecting package kernel for versions less than 5.15.167.1-1

In the Linux kernel, the following vulnerability has been resolved: fou: Fix null-ptr-deref in GRO. We observed a null-ptr-deref in fougroreceive while shutting down a host. 0 The NULL pointer is sk-skuserdata, and the offset 8 is of protocol in struct fou. When fourelease is called due to netns...