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NVD / CVE Program· CNA Linux

CVE-2026-46198: batman-adv: fix integer overflow on buff_pos

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 0.28% (FIRST EPSS).
  • Someone on the same network segment 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 0799e5943611006b346b8813c7daf7dd5aa26bfd, 10bb1f366d884d506c38a947b43026a75d1afe9a, 867cd090760e8f5cd206f387b47ff9c56fac04e9; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0799e5943611006b346b8813c7daf7dd5aa26bfd, 10bb1f366d884d506c38a947b43026a75d1afe9a, 867cd090760e8f5cd206f387b47ff9c56fac04e9; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1 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: fix integer overflow on buff_pos Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
May 28, 2026
Updated
Aug 5, 2026
EPSS
0.2% · 20th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
—
CNA · Linux
8.8
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.

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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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel2.6.38 and later · before 5.10.258
  • linux linux kernel5.11 and later · before 5.15.209
  • linux linux kernel5.16 and later · before 6.1.175
  • linux linux kernel6.2 and later · before 6.6.140
  • linux linux kernel6.7 and later · before 6.12.90
  • linux linux kernel6.13 and later · before 6.18.32
  • linux linux kernel6.19 and later · before 7.0.9
  • linux linux kernel7.1

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

    • 2.6.38affected
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before 867cd090760e8f5cd206f387b47ff9c56fac04e9affected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before 10bb1f366d884d506c38a947b43026a75d1afe9aaffected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before 96c9c0ed9a9579a9085765aceaa4556a6666eb82affected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before f61499359fa529f0d45a53bf7c573a49eb6322e6affected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before 974542d1efc48b7e9fe16184e647615cba39969baffected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before bf872db54f91ffe70104b98c20068b2d5910e018affected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before b252797bfced986d6d92ec2f4cfcca842ce8aa78affected · git
    • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 and later · before 0799e5943611006b346b8813c7daf7dd5aa26bfdaffected · git
    • before 2.6.38not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.90-16.12.90-1
Debian:14linuxbefore 7.0.9-17.0.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-46186May 28, 2026 · Bluetooth: virtio_bt: validate rx pkt_type header length
    22Monitor
  • ← EarlierCVE-2026-46192May 28, 2026 · spi: microchip-core-qspi: don't attempt to transmit during emulated read-only dual/quad operations
    22Monitor
  • Later →CVE-2026-46202May 28, 2026 · HID: appletb-kbd: run inactivity autodim from workqueues
    22Monitor

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 Linux0799e5943611006b346b8813c7daf7dd5aa26bfdVendor (CNA)
Linux Linux10bb1f366d884d506c38a947b43026a75d1afe9aVendor (CNA)
Linux Linux867cd090760e8f5cd206f387b47ff9c56fac04e9Vendor (CNA)
Linux Linux96c9c0ed9a9579a9085765aceaa4556a6666eb82Vendor (CNA)
Linux Linux974542d1efc48b7e9fe16184e647615cba39969bVendor (CNA)
Linux Linuxb252797bfced986d6d92ec2f4cfcca842ce8aa78Vendor (CNA)
Linux Linuxbf872db54f91ffe70104b98c20068b2d5910e018Vendor (CNA)
Linux Linuxf61499359fa529f0d45a53bf7c573a49eb6322e6Vendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.141.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.176-1 · 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.

No history yet (it accumulates with the daily EPSS job).

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.

  • CVE-2026-460391 days apartrxgk: Fix potential integer overflow in length check
    39Monitor
  • CVE-2026-4632512 days apartRDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE
    39Monitor
  • CVE-2026-4334120 days apartnet/ipv6: ioam6: prevent schema length wraparound in trace fill
    39Monitor
  • CVE-2026-3163334 days apartrxrpc: Fix integer overflow in rxgk_verify_response()
    39Monitor
  • CVE-2026-3164934 days apartnet: stmmac: fix integer underflow in chain mode
    39Monitor
  • CVE-2026-3165934 days apartbatman-adv: reject oversized global TT response buffers
    39Monitor

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

  • Someone on the same network segment 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
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-190 · Integer Overflow or Wraparound

CVSS vector

CVSS:3.1/AV:A/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.

ATT&CK techniques

—

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