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NVD / CVE Program· CNA Linux

CVE-2026-23258: net: liquidio: Initialize netdev pointer before queue setup

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.11% (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 1d4590fde856cb94bd9a46e795c29d8288c238fc, 926ede0c85e1e57c97d64d9612455267d597bb2c, a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4.

Low priority for now. Upgrade to Linux Linux 1d4590fde856cb94bd9a46e795c29d8288c238fc, 926ede0c85e1e57c97d64d9612455267d597bb2c, a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4 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: liquidio: Initialize netdev pointer before queue setup In setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq(). However, the pointer to this structure is stored in oct->props[i].netdev only after the calls to netif_set_real_num_rx_queues() and netif_set_real_num_tx_queues(). If either of these functions fails, setup_nic_devices() returns an error without freeing the allocated netdev. Since oct->props[i].netdev is still NULL at this point, the cleanup function liquidio_destroy_nic_device() will fail to find and free the netdev, resulting in a memory leak. Fix this by initializing oct->props[i].netdev before calling the queue setup functions. This ensures that the netdev is properly accessible for cleanup in case of errors. Compile tested only. Issue found using a prototype static analysis tool and code review.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 18, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 1th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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

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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 kernel4.18 and later · before 5.10.250
  • linux linux kernel5.11 and later · before 5.15.200
  • linux linux kernel5.16 and later · before 6.1.163
  • linux linux kernel6.2 and later · before 6.6.124
  • linux linux kernel6.7 and later · before 6.12.70
  • linux linux kernel6.13 and later · before 6.18.10
  • linux linux kernel6.19

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

    • 4.18affected
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before be109646cdaecab262f6276303b1763468c94378affected · git
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before c81a8515fb8c8fb5d0dbc21f48337494bf1d60dfaffected · git
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4affected · git
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before c0ed6c77ec34050971fd0df2a94dfdea66d09331affected · git
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before 1d4590fde856cb94bd9a46e795c29d8288c238fcaffected · git
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before d028147ae06407cb355245db1774793600670169affected · git
    • c33c997346c34ea7b89aec99524ad9632a2f1e0c and later · before 926ede0c85e1e57c97d64d9612455267d597bb2caffected · git
    • before 4.18not affected · semver
    • 5.10.250 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.164-16.1.164-1
Debian:13linuxbefore 6.12.73-16.12.73-1
Debian:14linuxbefore 6.18.10-16.18.10-1

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-2026-23256Mar 18, 2026 · net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup
    22Monitor
  • ← EarlierCVE-2026-23257Mar 18, 2026 · net: liquidio: Fix off-by-one error in PF setup_nic_devices() cleanup
    22Monitor
  • Later →CVE-2026-23260Mar 18, 2026 · regmap: maple: free entry on mas_store_gfp() failure
    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 Linux1d4590fde856cb94bd9a46e795c29d8288c238fcVendor (CNA)
Linux Linux926ede0c85e1e57c97d64d9612455267d597bb2cVendor (CNA)
Linux Linuxa0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4Vendor (CNA)
Linux Linuxbe109646cdaecab262f6276303b1763468c94378Vendor (CNA)
Linux Linuxc0ed6c77ec34050971fd0df2a94dfdea66d09331Vendor (CNA)
Linux Linuxc81a8515fb8c8fb5d0dbc21f48337494bf1d60dfVendor (CNA)
Linux Linuxd028147ae06407cb355245db1774793600670169Vendor (CNA)
debian:linux6.1.164-1 · 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

  • 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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

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

nvd-primary

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