CVE-2026-23398

CVE-2026-23398 Linux 内核 icmptagvalidation 空指针解引用（远程拒绝服务） 描述 net/ipv4/icmp.c 中的 icmptagvalidation 在解引用 inetprotosproto 时未进行 NULL 检查。远程攻击者可以发送单个精心构造的 ICMP Fragmentation Needed 数据包，其中包含未注册的内部协议号，从而在 softirq 上下文中使内核崩溃。 受影响版本：提交 614aefe56af8（主线）之前的 Linux 内核 / d938dd5a0ad7（稳定版 6.12）之前的版本 用法...

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...