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CVE-2026-46037

8.2 high SSVC exploitation: none Modified
NVD · CVE.org

In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: validate reply type before using icmp_pointers Extended echo replies use ICMP_EXT_ECHOREPLY as the outbound reply type. That value is outside the range covered by icmp_pointers[], which only describes the traditional ICMP types up to NR_ICMP_TYPES. Avoid consulting icmp_pointers[] for reply types outside that range, and use array_index_nospec() for the remaining in-range lookup. Normal ICMP replies keep their existing behavior unchanged.

Fix

Patch, vendor advisory and mitigation references on NVD 7

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 2

  1. CwesCWE-125NVD modified 2026-10-19 20:18
  2. First seenCVSS 8.2 · linuxNVD modified 2026-10-15 02:19

Affected (CPE criteria) 1

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References 10