CVE-2026-46037
ipv4: icmp: validate reply type before using icmp_pointers
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
| Last Updated | Jun 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99 d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < 93df2af4f491de33827550b9d420f01808c0706b d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < 92e7c209036dcc0e8ffdf806fdfd3645b263bea5 d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < bc64a66e0b9ad937d3d49934242ee62b01ba9a94 d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < c2178ff1c70ebfc2ab9651b230c58a34683db759 d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1 d329ea5bd8845f0b196bf41b18b6173340d6e0e4 < 67bf002a2d7387a6312138210d0bd06e3cf4879b
Linux / Linux
5.13
References
git.kernel.org: https://git.kernel.org/stable/c/b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99 git.kernel.org: https://git.kernel.org/stable/c/93df2af4f491de33827550b9d420f01808c0706b git.kernel.org: https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5 git.kernel.org: https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94 git.kernel.org: https://git.kernel.org/stable/c/c2178ff1c70ebfc2ab9651b230c58a34683db759 git.kernel.org: https://git.kernel.org/stable/c/d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1 git.kernel.org: https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b