CVE Watch19 oct 2026

CVE-2026-43093

In the Linux kernel, the following vulnerability has been resolved: xsk: tighten UMEM headroom validation to account for tailroom and min f

CVSS

7.8

Alto

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 6 may 2026 · Última mod.: 19 oct 2026 · CWE-787

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-09-282026-10-26

Descripción técnica

In the Linux kernel, the following vulnerability has been resolved: xsk: tighten UMEM headroom validation to account for tailroom and min frame The current headroom validation in xdp_umem_reg() could leave us with insufficient space dedicated to even receive minimum-sized ethernet frame. Furthermore if multi-buffer would come to play then skb_shared_info stored at the end of XSK frame would be corrupted. HW typically works with 128-aligned sizes so let us provide this value as bare minimum. Multi-buffer setting is known later in the configuration process so besides accounting for 128 bytes, let us also take care of tailroom space upfront.

Referencias oficiales

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