Answer in brief
CVE-2026-46037 records a High severity (CVSS 8.2) vulnerability in ipv4: icmp: validate reply type before using icmp_pointers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99 || >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <93df2af4f491de33827550b9d420f01808c0706b || >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <92e7c209036dcc0e8ffdf806fdfd3645b263bea5 || >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <bc64a66e0b9ad937d3d49934242ee62b01ba9a94 || >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <c2178ff1c70ebfc2ab9651b230c58a34683db759 || >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1 || >=d329ea5bd8845f0b196bf41b18b6173340d6e0e4 <67bf002a2d7387a6312138210d0bd06e3cf4879b | b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99, 93df2af4f491de33827550b9d420f01808c0706b, 92e7c209036dcc0e8ffdf806fdfd3645b263bea5, bc64a66e0b9ad937d3d49934242ee62b01ba9a94, c2178ff1c70ebfc2ab9651b230c58a34683db759, d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1, 67bf002a2d7387a6312138210d0bd06e3cf4879b |
| Linux/Linuxgeneric | 5.13 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.