cve-2026-31429

About this tag
CVE-2026-31429 is a kernel security vulnerability in Linux's skb head free logic, specifically within the networking path. The bug involves a KFENCE-specific allocation detail that could cause the kernel to return memory to the wrong slab cache, leading to a cross-cache free condition. The fix is a surgical change that always uses the generic kfree(head) path in skb_kfree_head instead of inferring allocator provenance from ksize-style heuristics. This narrow repair closes the vulnerability without disturbing the broader networking stack behavior. Discussions on WindowsForum cover the technical details of the bug, its impact on kernel stability, and the rationale behind the chosen fix, making it relevant for developers and system administrators concerned with kernel security and patching.

  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