PatchTheCVECVE-2026-46037: In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: validate reply type before us
CVE-2026-46037 is a high-severity flaw (CVSS 8.2) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.2 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 57%) |
| CISA exploited list | No |
| Weakness | CWE-125 |
| Published | 2026-05-27 |
| Last modified | 2026-10-19 |
Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-46037?
linux kernel: upgrade to 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4. Exact commands for each OS are on this page.
Is CVE-2026-46037 being exploited?
CVE-2026-46037 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-46037 affect?
CVE-2026-46037 affects linux kernel. Severity is high (CVSS 8.2). 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 covere
How urgent is CVE-2026-46037?
Priority 50/100. High severity; Remotely exploitable, no login, no user action; On your watchlist
Software pages
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