In the Linux kernel, the following vulnerability has been resolved:
inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP
Yizhou Zhao reported that simply having one RAW socket on protocol
IPPROTO_RAW (255) was dangerous.
socket(AF_INET, SOCK_RAW, 255);
A malicious incoming ICMP packet can set the protocol field to 255
and match this socket, leading to FNHE cache changes.
inner = IP(src="192.168.2.1", dst="8.8.8.8", proto=255)/Raw("TEST")
pkt = IP(src="192.168.1.1", dst="192.168.2.1")/ICMP(type=3, code=4, nexthopmtu=576)/inner
"man 7 raw" states:
A protocol of IPPROTO_RAW implies enabled IP_HDRINCL and is able
to send any IP protocol that is specified in the passed header.
Receiving of all IP protocols via IPPROTO_RAW is not possible
using raw sockets.
Make sure we drop these malicious packets.
References
Configurations
Configuration 1 (hide)
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History
09 Jun 2026, 19:47
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* |
|
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/19e42490c89bac9a388f28179e66bebbef350f99 - Patch | |
| References | () https://git.kernel.org/stable/c/531c1aec81bfe19d00af13da5531fbb8209e4bd2 - Patch | |
| References | () https://git.kernel.org/stable/c/719d3932b8f6e3348ce2f0ac58e278301fc17575 - Patch | |
| References | () https://git.kernel.org/stable/c/c89477ad79446867394360b29bb801010fc3ff22 - Patch | |
| References | () https://git.kernel.org/stable/c/db76b75ede3810e7cf9cfea5067d4f3e0993768b - Patch |
05 Jun 2026, 07:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.1 |
03 Jun 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-03 18:16
Updated : 2026-06-09 19:47
NVD link : CVE-2026-46266
Mitre link : CVE-2026-46266
CVE.ORG link : CVE-2026-46266
JSON object : View
Products Affected
linux
- linux_kernel
CWE