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NVD / CVE Program· CNA Linux

CVE-2026-93204: batman-adv: dat: atomically update mac addresses

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 159360a0de831845c4500b4f8638decdcd624040, 1674855a5b6eacfe35f4db3095d7055c25467274, 181012b3d29c51197c235ee5871fc7512c736855.

Low priority for now. Upgrade to Linux Linux 159360a0de831845c4500b4f8638decdcd624040, 1674855a5b6eacfe35f4db3095d7055c25467274, 181012b3d29c51197c235ee5871fc7512c736855 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: atomically update mac addresses When a MAC address is updated in batadv_dat_entry_add(), it is done using a simple copy function. A parallel reader might only see parts of this update. In worst case, the reader is transporting the half updated MAC address over the network or is creating an ARP response using it - poisoning the ARP cache. atomic64_t can be used to store the 48 bit of a mac address. A reader will then either see the old mac address or the new one - never a mixture of both.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.8affected
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before 181012b3d29c51197c235ee5871fc7512c736855affected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before 159360a0de831845c4500b4f8638decdcd624040affected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before 259db2c04586d40b82c5c3002b1e28b0698a0bb7affected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before 1674855a5b6eacfe35f4db3095d7055c25467274affected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before 66238e2a74eca5dabf85b0cd2c3c944e474dc2fdaffected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before a5e4d6cb4f6848b8906c1c493f99a8ccc0638515affected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9affected · git
    • 2f1dfbe185075a50dc8f0490a136377af53a1c62 and later · before e6de568d3eda3e3c01c868fabd7a9535d5ee4a73affected · git
    • before 3.8not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-93202Sep 17, 2026 · i3c: master: Fix recursive locking during device registration
    0Monitor
  • ← EarlierCVE-2026-93203Sep 17, 2026 · batman-adv: bla: avoid CRC corruption due to parallel claim add
    28Monitor
  • Later →CVE-2026-93809Sep 24, 2026 · drm/amdgpu: flush pending RCU callbacks on module unload
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux159360a0de831845c4500b4f8638decdcd624040Vendor (CNA)
Linux Linux1674855a5b6eacfe35f4db3095d7055c25467274Vendor (CNA)
Linux Linux181012b3d29c51197c235ee5871fc7512c736855Vendor (CNA)
Linux Linux259db2c04586d40b82c5c3002b1e28b0698a0bb7Vendor (CNA)
Linux Linux66238e2a74eca5dabf85b0cd2c3c944e474dc2fdVendor (CNA)
Linux Linuxa5e4d6cb4f6848b8906c1c493f99a8ccc0638515Vendor (CNA)
Linux Linuxe6de568d3eda3e3c01c868fabd7a9535d5ee4a73Vendor (CNA)
Linux Linuxf68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9Vendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records