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NVD / CVE Program· CNA Linux

CVE-2026-53216: net: mvpp2: limit XDP frame size to the RX buffer

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: 0.50% (FIRST EPSS).
  • 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 3b8b0c3631b19faee53f0d15a49924129b063eec, 910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e, 9545cc5ef18ca22d031f2f47c157192460652359.

Low priority for now. Upgrade to Linux Linux 3b8b0c3631b19faee53f0d15a49924129b063eec, 910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3e, 9545cc5ef18ca22d031f2f47c157192460652359 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: net: mvpp2: limit XDP frame size to the RX buffer mvpp2 has short and long BM pools, and short pool buffers can be smaller than PAGE_SIZE. The XDP path nevertheless initializes every xdp_buff with PAGE_SIZE as frame size. XDP helpers use frame_sz to validate tail growth and to derive the hard end of the data area. Advertising PAGE_SIZE for short buffers can let bpf_xdp_adjust_tail() grow a packet past the real allocation, corrupting memory or later tripping skb tailroom checks. Initialize the XDP buffer with bm_pool->frag_size so XDP tailroom matches the actual buffer backing the packet.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Jun 25, 2026
Updated
Aug 5, 2026
EPSS
0.5% · 43th 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 · 0.5%

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-2026-53216

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 kernel5.9 and later · before 5.15.210
  • linux linux kernel5.16 and later · before 6.1.176
  • linux linux kernel6.2 and later · before 6.6.143
  • linux linux kernel6.7 and later · before 6.12.94
  • linux linux kernel6.13 and later · before 6.18.36
  • linux linux kernel6.19 and later · before 7.0.13
  • 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

    • 5.9affected
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before a3ee9231ccec6ec3be2de89c56f897055fd9eab1affected · git
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before ec8e1e5842bc0dbd4c272761f4db3651eecd0339affected · git
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 3b8b0c3631b19faee53f0d15a49924129b063eecaffected · git
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 994bd2b58d2bd08aa97ec0836cc813cfcb00d749affected · git
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3eaffected · git
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 9545cc5ef18ca22d031f2f47c157192460652359affected · git
    • 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before f3c6aa078927e6fe8121c9c591ddee8716c5305aaffected · git
    • before 5.9not affected · semver
    • 5.15.210 and later · up to and including 5.15.*not 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 6.12.94-16.12.94-1
Debian:14linuxbefore 7.0.13-17.0.13-1

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-2026-53211Jun 25, 2026 · netfilter: nft_meta_bridge: fix stale stack leak via IIFHWADDR register
    22Monitor
  • ← EarlierCVE-2026-53214Jun 25, 2026 · ipv6: Fix a potential NPD in cleanup_prefix_route()
    22Monitor
  • Later →CVE-2026-53231Jun 25, 2026 · net: phy: don't try to setup PHY-driven SFP cages when using genphy
    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 Linux3b8b0c3631b19faee53f0d15a49924129b063eecVendor (CNA)
Linux Linux910617a4e67dbdd5fdb39d9dc6a51e491e1b2c3eVendor (CNA)
Linux Linux9545cc5ef18ca22d031f2f47c157192460652359Vendor (CNA)
Linux Linux994bd2b58d2bd08aa97ec0836cc813cfcb00d749Vendor (CNA)
Linux Linuxa3ee9231ccec6ec3be2de89c56f897055fd9eab1Vendor (CNA)
Linux Linuxec8e1e5842bc0dbd4c272761f4db3651eecd0339Vendor (CNA)
Linux Linuxf3c6aa078927e6fe8121c9c591ddee8716c5305aVendor (CNA)
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.

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

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 (6 more)

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

All records