Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-23256: net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup

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 01fbca1e93ec3f39f76c31a8f9afa32ce00da48a, 3bf519e39b51cb08a93c0599870b35a23db1031e, 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd.

Low priority for now. Upgrade to Linux Linux 01fbca1e93ec3f39f76c31a8f9afa32ce00da48a, 3bf519e39b51cb08a93c0599870b35a23db1031e, 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd 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: Fix off-by-one error in VF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Compile tested only. Issue found using 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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-23256

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

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.

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 kernel4.10 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

    • 4.10affected
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before bd680e56e316be92c01568be98d85d7a6c9bd92caffected · git
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before 01fbca1e93ec3f39f76c31a8f9afa32ce00da48aaffected · git
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before 71a56b89203ec7e5670d94a61a9b4ae617eca804affected · git
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before 3bf519e39b51cb08a93c0599870b35a23db1031eaffected · git
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before 52b19b3a22306fe452ec9e8ff96063f4bfb77b99affected · git
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfdaffected · git
    • 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 and later · before 6cbba46934aefdfb5d171e0a95aec06c24f7ca30affected · git
    • before 4.10not 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-2026-23252Mar 18, 2026 · xfs: get rid of the xchk_xfile_*_descr calls
    22Monitor
  • ← EarlierCVE-2026-23254Mar 18, 2026 · net: gro: fix outer network offset
    22Monitor
  • Later →CVE-2026-23257Mar 18, 2026 · net: liquidio: Fix off-by-one error in PF setup_nic_devices() cleanup
    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 Linux01fbca1e93ec3f39f76c31a8f9afa32ce00da48aVendor (CNA)
Linux Linux3bf519e39b51cb08a93c0599870b35a23db1031eVendor (CNA)
Linux Linux4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfdVendor (CNA)
Linux Linux52b19b3a22306fe452ec9e8ff96063f4bfb77b99Vendor (CNA)
Linux Linux6cbba46934aefdfb5d171e0a95aec06c24f7ca30Vendor (CNA)
Linux Linux71a56b89203ec7e5670d94a61a9b4ae617eca804Vendor (CNA)
Linux Linuxbd680e56e316be92c01568be98d85d7a6c9bd92cVendor (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.

EPSS, last 120 days

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

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-2026-5308898 days apartnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb
    39Monitor
  • CVE-2026-53309100 days apartocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
    39Monitor
  • CVE-2026-64047123 days apartnet: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
    39Monitor
  • CVE-2026-5290783 days apartmedia: rockchip: rkcif: fix off by one bugs
    31Monitor
  • CVE-2026-5303698 days apartbpf, arm64: Fix off-by-one in check_imm signed range check
    31Monitor
  • CVE-2024-57990385 days apartwifi: mt76: mt7925: fix off by one in mt7925_load_clc()
    31Monitor

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-193 · Off-by-one Error

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