CVE-2026-43099
Published: May 6, 2026
Modified: Jun 1, 2026
CVSS v3.1
7.5
Description
In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: fix null-ptr-deref in icmp_build_probe() ipv6_stub->ipv6_dev_find() may return ERR_PTR(-EAFNOSUPPORT) when the IPv6 stack is not active (CONFIG_IPV6=m and not loaded), and passing this error pointer to dev_hold() will cause a kernel crash with null-ptr-deref. Instead, silently discard the request. RFC 8335 does not appear to define a specific response for the case where an IPv6 interface identifier is syntactically valid but the implementation cannot perform the lookup at runtime, and silently dropping the request may safer than misreporting "No Such Interface".
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected d329ea5bd8845f0b196bf41b18b6173340d6e0e4 - < 0f21bc261e60f0c696c58841c4873ff77ed83673affected d329ea5bd8845f0b196bf41b18b6173340d6e0e4 - < dc5db4db19766a61ad65d81d1f55b1c1e51ba78daffected d329ea5bd8845f0b196bf41b18b6173340d6e0e4 - < 47a8bf52156ac7e7a581eca31c1f964ba4258d4daffected d329ea5bd8845f0b196bf41b18b6173340d6e0e4 - < 6be325206850a0891896d38bcf83a09d8b54ec48affected d329ea5bd8845f0b196bf41b18b6173340d6e0e4 - < f91b3ed9e7fa82a70511b5f6901c88379acf2964+2 more versions |
Linux | Linux | affected 5.13unaffected 0 - < 5.13unaffected 5.15.209 - <= 5.15.*unaffected 6.1.175 - <= 6.1.*unaffected 6.6.136 - <= 6.6.*+4 more versions |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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