CVE-2026-46037
HIGH severity · CVSS 8.2
8.2CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactLow
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879bPatch
- https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5Patch
- https://git.kernel.org/stable/c/93df2af4f491de33827550b9d420f01808c0706bPatch
- https://git.kernel.org/stable/c/b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99Patch
- https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94Patch
- https://git.kernel.org/stable/c/c2178ff1c70ebfc2ab9651b230c58a34683db759Patch
- https://git.kernel.org/stable/c/d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html