CVE-2025-38572

Published Aug 19, 2025

Last updated 3 months ago

CVSS high 7.8

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: reject malicious packets in ipv6_gso_segment() syzbot was able to craft a packet with very long IPv6 extension headers leading to an overflow of skb->transport_header. This 16bit field has a limited range. Add skb_reset_transport_header_careful() helper and use it from ipv6_gso_segment() WARNING: CPU: 0 PID: 5871 at ./include/linux/skbuff.h:3032 skb_reset_transport_header include/linux/skbuff.h:3032 [inline] WARNING: CPU: 0 PID: 5871 at ./include/linux/skbuff.h:3032 ipv6_gso_segment+0x15e2/0x21e0 net/ipv6/ip6_offload.c:151 Modules linked in: CPU: 0 UID: 0 PID: 5871 Comm: syz-executor211 Not tainted 6.16.0-rc6-syzkaller-g7abc678e3084 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:skb_reset_transport_header include/linux/skbuff.h:3032 [inline] RIP: 0010:ipv6_gso_segment+0x15e2/0x21e0 net/ipv6/ip6_offload.c:151 Call Trace: <TASK> skb_mac_gso_segment+0x31c/0x640 net/core/gso.c:53 nsh_gso_segment+0x54a/0xe10 net/nsh/nsh.c:110 skb_mac_gso_segment+0x31c/0x640 net/core/gso.c:53 __skb_gso_segment+0x342/0x510 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x857/0x11b0 net/core/dev.c:3950 validate_xmit_skb_list+0x84/0x120 net/core/dev.c:4000 sch_direct_xmit+0xd3/0x4b0 net/sched/sch_generic.c:329 __dev_xmit_skb net/core/dev.c:4102 [inline] __dev_queue_xmit+0x17b6/0x3a70 net/core/dev.c:4679
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Modified
Products
linux_kernel, debian_linux

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
NVD-CWE-noinfo

Social media

Hype score
Not currently trending

  1. 🚨 URGENT: #SUSE kernel security update 2026:0180-1 patches 9 vulnerabilities including critical CVE-2025-38572 (CVSS 9.2). Read more: 👉 https://t.co/kjXelBtQmB #Security https://t.co/8HSldX9Xxx

    @Cezar_H_Linux

    20 Jan 2026

    50 Impressions

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  2. 🔐 URGENT: #SUSE Kernel RT patch 2026:0171-1 fixes 7 vulns. Includes a CVSS 9.2 RCE flaw in IPv6 (CVE-2025-38572). Read more: 👉 https://t.co/9CKz5Zijxo #Security https://t.co/rZIntNwSAn

    @Cezar_H_Linux

    20 Jan 2026

    104 Impressions

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    3 Likes

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  3. Critical #SUSE Kernel RT update patches 7 vulnerabilities incl. CVE-2025-38572 (CVSS 9.2). iSCSI buffer overflow, IPv6 RCE, SCTP timing attacks fixed. Immediate patching recommended for enterprise systems. Read more: 👉 https://t.co/FcHm4CnzwE #Security https://t.co/osS5B7H8

    @Cezar_H_Linux

    19 Jan 2026

    64 Impressions

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Configurations

Related CVEs

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References

Sources include official advisories and independent security research.