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Linux EUVDEUVD-2026-95534

| CVE-2026-98379
2026-10-09 Linux GHSA-pm3c-rj84-8w7w
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Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

In the Linux kernel, the following vulnerability has been resolved:

netfilter: ip6t_rpfilter: reject routes without inet6_dev

ip6_route_lookup() can return an error-free route whose rt6i_idev is NULL. Lowering an external nexthop device's MTU below IPV6_MIN_MTU tears down its inet6_dev while fib6_ifdown() leaves routes using nexthop objects in the FIB. An unprivileged user can construct this state with rtnetlink in a private user and network namespace, then trigger a NULL dereference through an IPv6 rpfilter lookup:

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000 KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: rpfilter_mt (net/ipv6/netfilter/ip6t_rpfilter.c:75) Call Trace: ip6t_do_table (net/ipv6/netfilter/ip6_tables.c:316) nf_hook_slow (net/netfilter/core.c:619) ipv6_rcv (net/ipv6/ip6_input.c:351) __netif_receive_skb_one_core (net/core/dev.c:6216) process_backlog (net/core/dev.c:6680) __napi_poll (net/core/dev.c:7739) net_rx_action (net/core/dev.c:7959) handle_softirqs (kernel/softirq.c:622) do_softirq.part.0 (kernel/softirq.c:523) __local_bh_enable_ip (kernel/softirq.c:450) __dev_queue_xmit (net/core/dev.c:4913) packet_sendmsg (net/packet/af_packet.c:3139) __sys_sendto (net/socket.c:2252) __x64_sys_sendto (net/socket.c:2259) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Kernel panic - not syncing: Fatal exception in interrupt

Reject routes without an inet6_dev immediately after lookup. Such routes are not eligible for reverse-path filtering, and the check protects all later rt6i_idev dereferences.

Affected VersionsENISA

Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <1b9b5323725e458906c7620a3bc10398b51ad954
Linux patch: 7.3-rc5
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40
Linux patch: 6.1.189
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <1681ab6dd1271f2f36047490793b78b1848bbcc9
Linux patch: 6.6.158
Linux patch: 0
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <3a7384bc2e66217c9a01a392281334f4423740a0
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <f49da48bd679cfee646d6a40dd02b1933de577d1
Linux patch: 6.12.112
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <eafe081ea77d25b5c8e601680671b4ecb4520e7d
Linux patch: 5.10.271
Linux patch: 7.2.9
Linux patch: 5.15.222
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <65487e9e99431ffcf05024a817f51ee4e3bd9b47
Linux e26f9a480fb6c1b614660e824d69a74e2ce990f3 <f4de78756b0fddbd125b2b1b77c74f2eccc8e977
Linux patch: 6.18.55
Linux 3.3

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Lifecycle Timeline

2
Patch available
Oct 09, 2026 - 09:16 EUVD
CVE Published
Oct 09, 2026 - 07:34 cve.org
UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity Not scored yet
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
No CVSS yet + weak signal (CWE or non-zero EPSS)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

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