CVE-2026-23398

CVE-2026-23398 Linux Kernel icmptagvalidation NULL Pointer Dereference Remote DoS Description icmptagvalidation in net/ipv4/icmp.c dereferences inetprotosproto without a NULL check. A remote attacker can send a single crafted ICMP Fragmentation Needed packet with an unregistered inner protocol...

SUSE CVE-2026-99077

In the Linux kernel, the following vulnerability has been resolved: ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP packet, a FIB nexthop exception FNHE is only created if the kernel c...

DEBIAN-CVE-2026-99077

In the Linux kernel, the following vulnerability has been resolved: ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP packet, a FIB nexthop exception FNHE is only created if the kernel c...

CVE-2026-99077

In the Linux kernel, the following vulnerability has been resolved: ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP packet, a FIB nexthop exception FNHE is only created if the kernel c...

CVE-2026-99077 ipv4: udp: Create exceptions before socket matching

In the Linux kernel, the following vulnerability has been resolved: ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP packet, a FIB nexthop exception FNHE is only created if the kernel c...

CVE-2026-99077 ipv4: udp: Create exceptions before socket matching

In the Linux kernel, the following vulnerability has been resolved: ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP packet, a FIB nexthop exception FNHE is only created if the kernel c...

CVE-2026-99077

The Linux kernel contains a vulnerability where FIB nexthop exceptions (FNHE) are only created if a quoted UDP packet matches an existing socket. This allows off-path attackers to conduct a side-channel attack on the FNHE cache to discover ephemeral ports of connected UDP sockets. Previous mitiga...

EUVD-2026-108743

In the Linux kernel, the following vulnerability has been resolved: ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP packet, a FIB nexthop exception FNHE is only created if the kernel c...

Linux Distros Unpatched Vulnerability : CVE-2026-99077

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv4: udp: Create exceptions before socket matching Currently, when ICMP Fragmentation Needed and Redirect Message packets are locally delivered and quote a UDP...

CVE-2026-23398

A flaw was found in the Linux kernel. A remote attacker could trigger a kernel panic, leading to a Denial of Service DoS, by sending a specially crafted Internet Control Message Protocol ICMP Fragmentation Needed error. This occurs when the system is configured for hardened Path Maximum...

SUSE CVE-2026-23398

In the Linux kernel, the following vulnerability has been resolved: icmp: fix NULL pointer dereference in icmptagvalidation icmptagvalidation unconditionally dereferences the result of rcudereferenceinetprotosproto without checking for NULL. The inetprotos array is sparse -- only about 15 of 256...

CVE-2026-23398

In the Linux kernel, the following vulnerability has been resolved: icmp: fix NULL pointer dereference in icmptagvalidation icmptagvalidation unconditionally dereferences the result of rcudereferenceinetprotosproto without checking for NULL. The inetprotos array is sparse -- only about 15 of 256...

PT-2021-7066 · Linux +8 · Linux Kernel +8

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A flaw in the processing of received ICMP errors, specifically ICMP fragment needed and ICMP redirect, allows an off-path remote user to quickly scan open UDP ports and bypass the sour...

CVE-2004-1060: Undefined Security Weakness

Multiple TCP/IP and ICMP implementations, when using Path MTU PMTU discovery PMTUD, allow remote attackers to cause a denial of service network throughput reduction for TCP connections via forged ICMP "Fragmentation Needed and Don't Fragment was Set" packets with a low next-hop MTU value, aka the...