CVE-2026-52922Network attack vector

Mesh-node crash via unchecked packet-copy failure

Published Jun 24, 2026 · Updated Jun 24, 2026

Denial of service in the Linux Kernel batman-adv DAT path allows remote attackers to crash an affected mesh node via ARP or DHCP traffic. batadv_dat_forward_data() passes an unchecked pskb_copy_for_clone() result to batadv_send_skb_prepare_unicast_4addr(), which dereferences a NULL skb after allocation failure. The path is reachable only on an active batman-adv mesh with DAT enabled; the reported consequence is a kernel oops or panic without data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in the Linux Kernel batman-adv DAT path allows remote attackers to crash an affected mesh node via ARP or DHCP traffic. batadv_dat_forward_data() passes an unchecked pskb_copy_for_clone() result to batadv_send_skb_prepare_unicast_4addr(), which dereferences a NULL skb after allocation failure. The path is reachable only on an active batman-adv mesh with DAT enabled; the reported consequence is a kernel oops or panic without data disclosure or modification.

The record

CVE
CVE-2026-52922
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.8
  2. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <2d8826a2d3657cea66fb0370f9e521575a673871
  3. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef
  4. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <4d420d9ee70a220a2cd95aa0dd2e15acad66a505
  5. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <866ac1d57040ed0b44ca732e3c66b3aa6b93011c
  6. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <9bcebaedfb8479cb4affb23c7a0d000ca9a20e73
  7. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <9cceea8eeba710def2a5707ee00f00c74a9a1cac
  8. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <ce0c381199402a2c58f4599f4f6ed100d872d0da
  9. Affected versionversion=785ea1144182c341b8b85b0f8180291839d176a8 <cf48e75fc4fe0d5cc7721c82d454221d01367b93

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.8; version=785ea1144182c341b8b85b0f8180291839d176a8 <2d8826a2d3657cea66fb0370f9e521575a673871; version=785ea1144182c341b8b85b0f8180291839d176a8 <2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef; version=785ea1144182c341b8b85b0f8180291839d176a8 <4d420d9ee70a220a2cd95aa0dd2e15acad66a505; version=785ea1144182c341b8b85b0f8180291839d176a8 <866ac1d57040ed0b44ca732e3c66b3aa6b93011c; version=785ea1144182c341b8b85b0f8180291839d176a8 <9bcebaedfb8479cb4affb23c7a0d000ca9a20e73; version=785ea1144182c341b8b85b0f8180291839d176a8 <9cceea8eeba710def2a5707ee00f00c74a9a1cac; version=785ea1144182c341b8b85b0f8180291839d176a8 <ce0c381199402a2c58f4599f4f6ed100d872d0da; version=785ea1144182c341b8b85b0f8180291839d176a8 <cf48e75fc4fe0d5cc7721c82d454221d01367b93

Published CVSS scores

7.5Linux kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3Amazon LinuxCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo