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 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.

CVSS 3.1

8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-05-27

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b
• https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5
• https://git.kernel.org/stable/c/93df2af4f491de33827550b9d420f01808c0706b
• https://git.kernel.org/stable/c/b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99
• https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94

Check your stackJSON