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CVE-2026-46037
published 2026-05-27

CVE-2026-46037: In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: validate reply type before using icmp_pointers Extended echo replies use…

high8.2CVSS 3.1
AVNACLPRNUINSUCLINAH
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.

Affected

9 ranges
VendorProductVersion rangeFixed in
linuxlinux——
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < 93df2af4f491de33827550b9d420f01808c0706b93df2af4f491de33827550b9d420f01808c0706b
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < 92e7c209036dcc0e8ffdf806fdfd3645b263bea592e7c209036dcc0e8ffdf806fdfd3645b263bea5
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < bc64a66e0b9ad937d3d49934242ee62b01ba9a94bc64a66e0b9ad937d3d49934242ee62b01ba9a94
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < c2178ff1c70ebfc2ab9651b230c58a34683db759c2178ff1c70ebfc2ab9651b230c58a34683db759
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1
linuxlinux>= d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < 67bf002a2d7387a6312138210d0bd06e3cf4879b67bf002a2d7387a6312138210d0bd06e3cf4879b
linuxlinux_kernel——