CVE-2026-43099

HIGH EPSS 38.4%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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".

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
38.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.13  –  <6.6.136
linuxlinux_kernel*≥6.7  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.18.24
linuxlinux_kernel*≥6.19  –  <6.19.14
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/0f21bc261e60f0c696c58841c4873ff77ed83673
  • git.kernel.org https://git.kernel.org/stable/c/47a8bf52156ac7e7a581eca31c1f964ba4258d4d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b9911582d441f72fe6ccb15ffe3303bbc07f6f5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6be325206850a0891896d38bcf83a09d8b54ec48
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc5db4db19766a61ad65d81d1f55b1c1e51ba78d
  • git.kernel.org https://git.kernel.org/stable/c/f91b3ed9e7fa82a70511b5f6901c88379acf2964
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fde29fd9349327acc50d19a0b5f3d5a6c964dfd8
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/47a8bf52156ac7e7a581eca31c1f964ba4258d4d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b9911582d441f72fe6ccb15ffe3303bbc07f6f5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6be325206850a0891896d38bcf83a09d8b54ec48
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f91b3ed9e7fa82a70511b5f6901c88379acf2964
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fde29fd9349327acc50d19a0b5f3d5a6c964dfd8
    Patch