CVE-2026-98382Public exploitHinoki check available

Kernel panic via incorrect XDP device matching

Published Oct 9, 2026 · Updated Oct 9, 2026

Device-matching errors in Linux 6.3 BPF allow local users to crash the kernel via cross-device attachment of bound XDP programs. The __bpf_offload_dev_match() function accepts mismatched devices when their offdev pointers compare equal, allowing driver-specific metadata functions to interpret another driver's xdp_buff incorrectly. Exploitation requires CAP_BPF and CAP_NET_ADMIN; attaching a veth-bound program to tun causes an out-of-bounds read and kernel panic.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Device-matching errors in Linux 6.3 BPF allow local users to crash the kernel via cross-device attachment of bound XDP programs. The __bpf_offload_dev_match() function accepts mismatched devices when their offdev pointers compare equal, allowing driver-specific metadata functions to interpret another driver's xdp_buff incorrectly. Exploitation requires CAP_BPF and CAP_NET_ADMIN; attaching a veth-bound program to tun causes an out-of-bounds read and kernel panic.

The record

CVE
CVE-2026-98382
Published
Oct 9, 2026
Updated
Oct 9, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <0dceda331180617aeeb22381e8480b37f18ba08b
  2. Affected versionversion=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <6db1ce73e9853f533eb7f413f14ba00f8ec6f80d
  3. Affected versionversion=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <940b626854de200e6187777d42114727daca617c
  4. Affected versionversion=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <bb375f3c5990e29851894f20ebc4b9dbc6676126
  5. Affected versionversion=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <e57f04194361574493e3e6cf0b9e9c69e4ae9791
  6. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <0dceda331180617aeeb22381e8480b37f18ba08b; version=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <6db1ce73e9853f533eb7f413f14ba00f8ec6f80d; version=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <940b626854de200e6187777d42114727daca617c; version=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <bb375f3c5990e29851894f20ebc4b9dbc6676126; version=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <e57f04194361574493e3e6cf0b9e9c69e4ae9791; version=6.3

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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