CVE-2025-38572
published 2025-08-19CVE-2025-38572: 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…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
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:
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
Affected
39 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.148-1 (bookworm) | linux 6.1.148-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.148-1 (bookworm) | linux 6.1.148-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < 5dc60b2a00ed7629214ac0c48e43f40af2078703 | 5dc60b2a00ed7629214ac0c48e43f40af2078703 |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < 3f638e0b28bde7c3354a0df938ab3a96739455d1 | 3f638e0b28bde7c3354a0df938ab3a96739455d1 |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < 09ff062b89d8e48165247d677d1ca23d6d607e9b | 09ff062b89d8e48165247d677d1ca23d6d607e9b |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < de322cdf600fc9433845a9e944d1ca6b31cfb67e | de322cdf600fc9433845a9e944d1ca6b31cfb67e |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < ef05007b403dcc21e701cb1f30d4572ac0a9da20 | ef05007b403dcc21e701cb1f30d4572ac0a9da20 |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < 5489e7fc6f8be3062f8cb7e49406de4bfd94db67 | 5489e7fc6f8be3062f8cb7e49406de4bfd94db67 |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < 573b8250fc2554761db3bc2bbdbab23789d52d4e | 573b8250fc2554761db3bc2bbdbab23789d52d4e |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < ee851768e4b8371ce151fd446d24bf3ae2d18789 | ee851768e4b8371ce151fd446d24bf3ae2d18789 |
| linux | linux | >= d1da932ed4ecad2a14cbcc01ed589d617d0f0f09 < d45cf1e7d7180256e17c9ce88e32e8061a7887fe | d45cf1e7d7180256e17c9ce88e32e8061a7887fe |
| linux | linux_kernel | >= 0 < 5.10.244-1 | 5.10.244-1 |
| linux | linux_kernel | >= 0 < 6.1.148-1 | 6.1.148-1 |
| linux | linux_kernel | >= 0 < 6.12.43-1 | 6.12.43-1 |
| linux | linux_kernel | >= 0 < 6.16.3-1 | 6.16.3-1 |
| linux | linux_kernel | >= 0 < 5.15.0-163.173 | 5.15.0-163.173 |
| linux | linux_kernel | >= 0 < 6.8.0-100.100 | 6.8.0-100.100 |
| linux | linux_kernel | >= 3.8 < 5.4.297 | 5.4.297 |
| linux | linux_kernel | >= 5.11 < 5.15.190 | 5.15.190 |
| linux | linux_kernel | >= 5.16 < 6.1.148 | 6.1.148 |
| linux | linux_kernel | >= 5.5 < 5.10.241 | 5.10.241 |
| linux | linux_kernel | >= 6.13 < 6.15.10 | 6.15.10 |
| linux | linux_kernel | >= 6.16 < 6.16.1 | 6.16.1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH