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NVD / CVE Program· CNA Linux

CVE-2026-80600: batman-adv: dat: acquire ARP hw source only after skb realloc

Noroxi assessment

Priority: Monitor (action score 39/100)

  • 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: 0.73% (FIRST EPSS); higher than 54.2% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 01678c53a7717a748aee388b6839e7b9761d641c, 059a70e1d12d6d99310e0599d37b0323557569a8, 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 01678c53a7717a748aee388b6839e7b9761d641c, 059a70e1d12d6d99310e0599d37b0323557569a8, 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146 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: acquire ARP hw source only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Aug 28, 2026
Updated
Aug 29, 2026
EPSS
0.7% · 54th percentile
CWE
—

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CNA vs NVD score

NVD
—
CNA · Linux
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-80600

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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

    • 5.1affected
    • b61ec31c85756bbc898fb892555509afe709459a and later · before a82fc217cb7a447313c76ebf9f09b100771b0ddfaffected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before 86aa79b43e5b561fd3648891165bd7313b541315affected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before d755cd001fa2c248e186c1fc3df3d11d97dc843caffected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146affected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before 01678c53a7717a748aee388b6839e7b9761d641caffected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before 3b4c70c40f2e135a50cd38fc61c7d23a296a9981affected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before 059a70e1d12d6d99310e0599d37b0323557569a8affected · git
    • b61ec31c85756bbc898fb892555509afe709459a and later · before 48067b2ae4504500a7093d9e1e16b42e70330480affected · git
    • before 5.1not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-80596Aug 28, 2026 · Input: ims-pcu - only expose sysfs attributes on control interface
    33Monitor
  • ← EarlierCVE-2026-80597Aug 28, 2026 · mtd: maps: vmu-flash: fix NULL pointer dereference in initialization
    0Monitor
  • Later →CVE-2026-80602Aug 28, 2026 · perf/x86/amd/lbr: Fix kernel address leakage
    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 Linux01678c53a7717a748aee388b6839e7b9761d641cVendor (CNA)
Linux Linux059a70e1d12d6d99310e0599d37b0323557569a8Vendor (CNA)
Linux Linux3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146Vendor (CNA)
Linux Linux3b4c70c40f2e135a50cd38fc61c7d23a296a9981Vendor (CNA)
Linux Linux48067b2ae4504500a7093d9e1e16b42e70330480Vendor (CNA)
Linux Linux86aa79b43e5b561fd3648891165bd7313b541315Vendor (CNA)
Linux Linuxa82fc217cb7a447313c76ebf9f09b100771b0ddfVendor (CNA)
Linux Linuxd755cd001fa2c248e186c1fc3df3d11d97dc843cVendor (CNA)
debian:linux6.1.180-1 · 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+1% in 7 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

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✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

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

All records