NVD / CVE Program· CNA Linux

CVE-2026-53215: net: mvpp2: refill RX buffers before XDP or skb use

CriticalCVSS 9.8 · v3.1—No exploit Fix available

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.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: Linux Linux 02e1b5c4d3b4c658b72c145427cded1bba613fc1, 5.8, 5.9; azl3 kernel 6.6.141.1-1 on Azure Linux 3.0 6.6.143.1-1.

Low priority for now. Upgrade to Linux Linux 02e1b5c4d3b4c658b72c145427cded1bba613fc1, 5.8, 5.9; azl3 kernel 6.6.141.1-1 on Azure Linux 3.0 6.6.143.1-1 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: net: mvpp2: refill RX buffers before XDP or skb use The RX error path returns the current descriptor buffer to the hardware BM pool. That is only valid while the driver still owns the buffer. mvpp2_rx_refill() can fail after the current buffer has been handed to XDP or attached to an skb. In those cases mvpp2_run_xdp() may have recycled, redirected, or queued the page for XDP_TX, and an skb free also retires the data buffer. Returning such a buffer to BM lets hardware DMA into memory that is no longer owned by the RX ring. Refill the BM pool before handing the current buffer to XDP or to the skb. If the allocation fails there, drop the packet and return the still-owned current buffer to BM, preserving the pool depth. Once the refill succeeds, later local drops retire/free the current buffer instead of returning it to BM.

Published: Jun 25, 2026
Updated: Oct 19, 2026
EPSS: 0.5% · 43th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

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.

Is your version affected? Check it

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.

We use this product, ask for help

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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

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
- 95a936364f2685e9e040c6b179b553604d96de22, fba2cf348d9eb50b2049a73cc09313dab6d293f1, 5.9affected
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before a88b3293b556f4d8fba11db9a8061a6b0d3b69e6affected · git
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before a03cdcedb2cbcc42551dc3e4746929e93c5352d5affected · git
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 580f92f27cb8724bcc4be98ee89890eab524a2aeaffected · git
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before d0c8c4fbd22d260fe28530260656c5fb3c20ce84affected · git
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 8a2126c5afe89f8ceeb60a3afb9f075b736194cdaffected · git
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 02e1b5c4d3b4c658b72c145427cded1bba613fc1affected · git
- 07dd0a7aae7f72af7cec18909581c2bb570edddc and later · before 5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6affected · git
- 5.7.15 and later · before 5.8affected · semver
- 5.8.2 and later · before 5.9affected · semver

Affected versions · NVD (8)

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

linux linux kernel5.7.15 and later · before 5.8
linux linux kernel5.8.2 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

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.176-1	6.1.176-1
Debian:13	linux	before 6.12.94-1	6.12.94-1
Debian:14	linux	before 7.0.13-1	7.0.13-1

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-2026-53212Jun 25, 2026 · netfilter: nft_tunnel: fix use-after-free on object destroy
31Monitor
← EarlierCVE-2026-53213Jun 25, 2026 · drm/vc4: fix krealloc() memory leak
22Monitor
Later →CVE-2026-53217Jun 25, 2026 · net: mvpp2: sync RX data at the hardware packet offset
34Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
Linux Linux	02e1b5c4d3b4c658b72c145427cded1bba613fc1	Vendor (CNA)
Linux Linux	5.8	Vendor (CNA)
Linux Linux	5.9	Vendor (CNA)
Linux Linux	580f92f27cb8724bcc4be98ee89890eab524a2ae	Vendor (CNA)
Linux Linux	5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6	Vendor (CNA)
Linux Linux	8a2126c5afe89f8ceeb60a3afb9f075b736194cd	Vendor (CNA)
Linux Linux	a03cdcedb2cbcc42551dc3e4746929e93c5352d5	Vendor (CNA)
Linux Linux	a88b3293b556f4d8fba11db9a8061a6b0d3b69e6	Vendor (CNA)
Linux Linux	d0c8c4fbd22d260fe28530260656c5fb3c20ce84	Vendor (CNA)
azl3 kernel 6.6.141.1-1 on Azure Linux 3.0	6.6.143.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	6.1.176-1 · Debian:12	Package 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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)

CWE-416 · Use After Free

CVSS vector

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

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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 (2)

SSVC exploitation— → noneOct 16, 2026, 5:07 PM UTC
Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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

References

git.kernel.org/stable/c/02e1b5c4d3b4c658b72c145427cded1bba613fc1

Show all references (6 more)

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

All records