7.5

CVE-2026-43099

ipv4: icmp: fix null-ptr-deref in icmp_build_probe()

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".
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.13 < 6.6.136
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.83
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.24
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.14
Linux ≫ Linux Kernel Version7.0 Updaterc1
Linux ≫ Linux Kernel Version7.0 Updaterc2
Linux ≫ Linux Kernel Version7.0 Updaterc3
Linux ≫ Linux Kernel Version7.0 Updaterc4
Linux ≫ Linux Kernel Version7.0 Updaterc5
Linux ≫ Linux Kernel Version7.0 Updaterc6
Linux ≫ Linux Kernel Version7.0 Updaterc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.382
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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