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NVD / CVE Program· CNA Linux

CVE-2026-23289: IB/mthca: Add missed mthca_unmap_user_db() for mthca_create_srq()

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: 0.12% (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 117942ca43e2e3c3d121faae530989931b7f67e1, 11ac61f4e9b7c48b0dd44661765e5ace3c441aa3, 72fcfd4df46f2ee684c4776664d0cfc6c1746c9a; azl3 kernel 6.6.126.1-1 on Azure Linux 3.0 6.6.130.1-1.

Low priority for now. Upgrade to Linux Linux 117942ca43e2e3c3d121faae530989931b7f67e1, 11ac61f4e9b7c48b0dd44661765e5ace3c441aa3, 72fcfd4df46f2ee684c4776664d0cfc6c1746c9a; azl3 kernel 6.6.126.1-1 on Azure Linux 3.0 6.6.130.1-1 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: IB/mthca: Add missed mthca_unmap_user_db() for mthca_create_srq() Fix a user triggerable leak on the system call failure path.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 25, 2026
Updated
Nov 5, 2026
EPSS
0.1% · 2th percentile
CWE
—

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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2026-23289

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 kernel2.6.14 and later · before 5.10.253
  • linux linux kernel5.11 and later · before 5.15.203
  • linux linux kernel5.16 and later · before 6.1.167
  • linux linux kernel6.2 and later · before 6.6.130
  • linux linux kernel6.7 and later · before 6.12.77
  • linux linux kernel6.13 and later · before 6.18.17
  • linux linux kernel6.19 and later · before 6.19.7
  • linux linux kernel7.0

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

    • 2.6.14affected
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before 11ac61f4e9b7c48b0dd44661765e5ace3c441aa3affected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before 72fcfd4df46f2ee684c4776664d0cfc6c1746c9aaffected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before f67f1ad4029e9fa183141546de31987b254c9292affected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before d0148965dbca8cc8efa7e3d6e99940487bf661c0affected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before da8eaa73bc37d004350ba68eb18b6ade8e49db52affected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before deee46b37ebd8cc5ff810127883fca90f2412a7baffected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before 972b72d7e2d8fe1400f1c7a8304c282c539b7e02affected · git
    • ec34a922d243c3401a694450734e9effb2bafbfe and later · before 117942ca43e2e3c3d121faae530989931b7f67e1affected · git
    • before 2.6.14not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.8-16.19.8-1

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-2026-23286Mar 25, 2026 · atm: lec: fix null-ptr-deref in lec_arp_clear_vccs
    22Monitor
  • ← EarlierCVE-2026-23287Mar 25, 2026 · irqchip/sifive-plic: Fix frozen interrupt due to affinity setting
    22Monitor
  • Later →CVE-2026-23290Mar 25, 2026 · net: usb: pegasus: validate USB endpoints
    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 Linux117942ca43e2e3c3d121faae530989931b7f67e1Vendor (CNA)
Linux Linux11ac61f4e9b7c48b0dd44661765e5ace3c441aa3Vendor (CNA)
Linux Linux72fcfd4df46f2ee684c4776664d0cfc6c1746c9aVendor (CNA)
Linux Linux972b72d7e2d8fe1400f1c7a8304c282c539b7e02Vendor (CNA)
Linux Linuxd0148965dbca8cc8efa7e3d6e99940487bf661c0Vendor (CNA)
Linux Linuxda8eaa73bc37d004350ba68eb18b6ade8e49db52Vendor (CNA)
Linux Linuxdeee46b37ebd8cc5ff810127883fca90f2412a7bVendor (CNA)
Linux Linuxf67f1ad4029e9fa183141546de31987b254c9292Vendor (CNA)
azl3 kernel 6.6.126.1-1 on Azure Linux 3.06.6.130.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.170-1 · 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)

—

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. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records