CVE-2026-46266— inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP
Possible ATT&CK Techniques 1AI
T1498 · Network Denial of ServiceAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< db76b75ede3810e7cf9cfea5067d4f3e0993768b | affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 19e42490c89bac9a388f28179e66bebbef350f99 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 531c1aec81bfe19d00af13da5531fbb8209e4bd2 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 719d3932b8f6e3348ce2f0ac58e278301fc17575 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c89477ad79446867394360b29bb801010fc3ff22 | affected | ||
2.6.12 | affected | ||
< 2.6.12 | unaffected | ||
6.6.128≤ 6.6.* | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-46266
Vulnerability Information
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Vulnerability Title
inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于IPPROTO_RAW原始套接字未丢弃恶意ICMP数据包，可能导致FNHE缓存更改。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-46266
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-46266 (5)
Same Patch Batch · Linux · 2026-06-03 · 32 CVEs total
| CVE-2026-46244 | 9.1 CRITICAL | netfilter: nft_inner: Fix IPv6 inner_thoff desync |
| CVE-2026-46264 | 8.8 HIGH | drm/xe/pf: Fix sysfs initialization |
| CVE-2026-46273 | 8.6 HIGH | ibmveth: Disable GSO for packets with small MSS |
| CVE-2026-46251 | 8.4 HIGH | btrfs: fix block_group_tree dirty_list corruption |
| CVE-2026-46270 | 8.4 HIGH | power: supply: rt9455: Fix use-after-free in power_supply_changed() |
| CVE-2026-46253 | 7.8 HIGH | pstore/ram: fix buffer overflow in persistent_ram_save_old() |
| CVE-2026-46259 | 7.8 HIGH | procfs: fix missing RCU protection when reading real_parent in do_task_stat() |
| CVE-2026-46260 | 7.8 HIGH | ipv6: Fix out-of-bound access in fib6_add_rt2node(). |
| CVE-2026-46263 | 7.8 HIGH | drm/amd/display: Fix out-of-bounds stream encoder index v3 |
| CVE-2026-46271 | 7.8 HIGH | wifi: ath12k: do WoW offloads only on primary link |
| CVE-2026-46265 | 7.5 HIGH | RDMA/hns: Fix WQ_MEM_RECLAIM warning |
| CVE-2026-46250 | 7.3 HIGH | MIPS: Work around LLVM bug when gp is used as global register variable |
| CVE-2026-46246 | power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler | |
| CVE-2026-46247 | clk: qcom: gfx3d: add parent to parent request map | |
| CVE-2026-46245 | drm/amd/display: Fix dc_link NULL handling in HPD init | |
| CVE-2025-71314 | drm/panthor: Recover from panthor_gpu_flush_caches() failures | |
| CVE-2026-46248 | wifi: ath12k: clear stale link mapping of ahvif->links_map | |
| CVE-2025-71313 | PCI: endpoint: Add missing NULL check for alloc_workqueue() | |
| CVE-2026-46249 | octeontx2-af: Fix PF driver crash with kexec kernel booting | |
| CVE-2026-46257 | clocksource/drivers/timer-sp804: Fix an Oops when read_current_timer is called on ARM32 pl |
Showing top 20 of 32 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53277
KVM: arm64: Take the SRCU lock for page table walks in fault - CVE-2026-53276
Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer - CVE-2026-53275
ipv6: mcast: Fix use-after-free when processing MLD queries - CVE-2026-53274
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing - CVE-2026-53273
tee: optee: prevent use-after-free when the client exits bef
Same vendor: Linux
- CVE-2026-53277
KVM: arm64: Take the SRCU lock for page table walks in fault - CVE-2026-53276
Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer - CVE-2026-53275
ipv6: mcast: Fix use-after-free when processing MLD queries - CVE-2026-53274
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing - CVE-2026-53273
tee: optee: prevent use-after-free when the client exits bef
V. Comments for CVE-2026-46266
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