skb memory management

About this tag
The skb memory management tag on WindowsForum.com covers kernel-level issues related to socket buffer (skb) memory handling, particularly in Linux networking stacks. Recent discussions focus on a CVE-2026-31429 vulnerability involving a wrong-cache free condition in the skb head free logic, where KFENCE allocation details could cause memory to be returned to an incorrect slab cache. The fix involves using the generic kfree(head) path in skb_kfree_head instead of heuristic-based methods. This tag is relevant for developers and system administrators interested in kernel security, memory management, and networking stack stability, with an emphasis on surgical patches that minimize broader system impact.

  1. CVE-2026-31429 Kernel skb Head KFENCE Wrong-Cache Free: Fix Uses kfree

    CVE-2026-31429 is a good example of a kernel security issue that looks small on paper but matters because it sits in a hot, widely exercised networking path. The bug is in Linux’s skb head free logic, where a KFENCE-specific allocation detail could cause the kernel to return memory to the wrong...
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    • cve-2026-31429 kfence linux kernel security skb memory management
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    • Forum: Security Alerts