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NVD / CVE Program· CNA Linux

CVE-2026-72312: octeontx2-af: fix VF bringup affecting PF promiscuous state

HighCVSS 7.9 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 212c59e5e416859579272288fd325148fc316109, 3cf83432e0561aef6d7ec2664909d12d0ff0ffc1, 3de77d2f34c2bc2acaedabc2c5e0a561b85c283a.

Low priority for now. Upgrade to Linux Linux 212c59e5e416859579272288fd325148fc316109, 3cf83432e0561aef6d7ec2664909d12d0ff0ffc1, 3de77d2f34c2bc2acaedabc2c5e0a561b85c283a 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: octeontx2-af: fix VF bringup affecting PF promiscuous state Mbox handling of nix_set_rx_mode for a VF with promiscuous and all_multi flags set to false causes deletion of the PF's promiscuous and allmulti MCAM rules. This occurs because the APIs that enable/disable these rules operate only on the PF, even when the mbox request is made via a VF interface. Guard both rvu_npc_enable_allmulti_entry() and rvu_npc_enable_promisc_entry() disable paths with an is_vf() check so that a VF bringing up or tearing down its interface cannot inadvertently clear the PF's MCAM rules.

Published
Aug 15, 2026
Updated
Oct 16, 2026
EPSS
0.1% · 4th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.9
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-2026-72312

When you'll hear from us

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  • 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

    • 5.14affected
    • 967db3529ecac305d230aa4e60abddf6ab63543a and later · before daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9caffected · git
    • 967db3529ecac305d230aa4e60abddf6ab63543a and later · before 212c59e5e416859579272288fd325148fc316109affected · git
    • 967db3529ecac305d230aa4e60abddf6ab63543a and later · before 53e17d9ed779ad25870abb9c31bc294c71a2278caffected · git
    • 967db3529ecac305d230aa4e60abddf6ab63543a and later · before 3de77d2f34c2bc2acaedabc2c5e0a561b85c283aaffected · git
    • 967db3529ecac305d230aa4e60abddf6ab63543a and later · before 3cf83432e0561aef6d7ec2664909d12d0ff0ffc1affected · git
    • 967db3529ecac305d230aa4e60abddf6ab63543a and later · before fabb881df322da25442f98d23f5fa371e3c78ec4affected · git
    • before 5.14not affected · semver
    • 6.1.178 and later · up to and including 6.1.*not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
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-2026-72306Aug 15, 2026 · vduse: Fix race in vduse_dev_msg_sync and vduse_dev_read_iter
    0Monitor
  • ← EarlierCVE-2026-72310Aug 15, 2026 · smb: client: fix overflow in passthrough ioctl bounds check
    32Monitor
  • Later →CVE-2026-72314Aug 15, 2026 · regulator: core: regulator_lock_two() should test for EDEADLK not EDEADLOCK
    31Monitor

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 Linux212c59e5e416859579272288fd325148fc316109Vendor (CNA)
Linux Linux3cf83432e0561aef6d7ec2664909d12d0ff0ffc1Vendor (CNA)
Linux Linux3de77d2f34c2bc2acaedabc2c5e0a561b85c283aVendor (CNA)
Linux Linux53e17d9ed779ad25870abb9c31bc294c71a2278cVendor (CNA)
Linux Linuxdaa2451640a3e0727fd598f5c2ccb8bb4d5a8b9cVendor (CNA)
Linux Linuxfabb881df322da25442f98d23f5fa371e3c78ec4Vendor (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

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

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

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/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.

References

Show all references (5 more)

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

All records