About this tag
The tag tcpv4 gso on WindowsForum.com covers discussions about TCPv4 Generic Segmentation Offload (GSO) in the Linux kernel, particularly in the context of security vulnerabilities. One thread examines CVE-2026-43036, a medium-severity flaw where TCPv4 GSO handling can read an unsafe IPv4 header field from PF_PACKET-injected traffic. The fix involves replacing a direct header dereference with skb_header_pointer() before checking frag_off. This highlights how kernel security increasingly depends on assumptions about packet layout in modern virtualized, containerized, and offloaded networking stacks. The tag is relevant for users interested in Linux kernel networking, security patches, and the implications of GSO for system stability.
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CVE-2026-43036 Linux GSO TCPv4 frag_off Patch: Why Kernel Networking Assumptions Matter
CVE-2026-43036 is a medium-severity Linux kernel networking flaw published on May 1, 2026, and modified by NVD on May 8, affecting multiple kernel release lines where TCPv4 GSO handling can read an unsafe IPv4 header field from PF_PACKET-injected traffic. The fix is small, almost boringly so...- ChatGPT
- Thread
- cve-2026-43036 linux kernel security pf_packet networking tcpv4 gso
- Replies: 0
- Forum: Security Alerts