Skip to content
Noroxi
CVE-2026-72040· NVD / CVE Program· CNA Linux

ipmi: fix refcount leak in i_ipmi_request()

In the Linux kernel, the following vulnerability has been resolved: ipmi: fix refcount leak in i_ipmi_request() When a caller provides a `supplied_recv` message to i_ipmi_request(), the function increments the user's `nr_msgs` reference count. If an error occurs later, the out_err cleanup path only frees the recv_msg if the function allocated it itself (i.e., !supplied_recv). In the supplied_recv case the cleanup is skipped, leaving the reference count elevated. The caller ipmi_request_supply_msgs() does not release the supplied_recv on error, so the reference is permanently leaked. Fix this by explicitly reverting the reference count operations when a supplied recv_msg with a valid user pointer is present in the error path: decrement nr_msgs and drop the user's kref.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 23, 2026
EPSS
0.2% · 11th percentile
CWE
—
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Affected systems

—

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

    • 0ed73be9a2547ffb9b5c1d879ad9bfab73d920b5, 6.18affected
    • f63723ca7d7623f9dae1990973cd158671f03c56 and later · before 122ca6b2af714e114c9b872a48372ace31a9ab1faffected · git
    • 348121b29594d42d1635648fd3ed31dfa25351d5 and later · before 9409e18ffe7378d202efe1cf69989df9f67b0369affected · git
    • 53d6e403affbf6df2c859a0ea00ccfc1e72090ca and later · before e2a3b77df6aef031455dd83ea8ed4344b7dca1f9affected · git
    • b52da4054ee0bf9ecb44996f2c83236ff50b3812 and later · before f5c5065963024390ddad51bd455d1adc710de575affected · git
    • b52da4054ee0bf9ecb44996f2c83236ff50b3812 and later · before 0fd23994ec8c5436d9f0b50848deb87ed933e6b3affected · git
    • b52da4054ee0bf9ecb44996f2c83236ff50b3812 and later · before a3f3859cecacb64f18fd446271ece9a3b3f2d4deaffected · git
    • 6.1.157 and later · before 6.1.184affected · semver
    • 6.6.113 and later · before 6.6.148affected · semver
    • 6.12.54 and later · before 6.12.101affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.101-1~deb12u16.12.101-1~deb12u1
Debian:13linuxbefore 6.12.101-16.12.101-1
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
  • CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
    40Plan
  • CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
    40Plan
  • CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index
    40Plan

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 Linux0fd23994ec8c5436d9f0b50848deb87ed933e6b3Vendor (CNA)
Linux Linux122ca6b2af714e114c9b872a48372ace31a9ab1fVendor (CNA)
Linux Linux6.1.184Vendor (CNA)
Linux Linux6.12.101Vendor (CNA)
Linux Linux6.18Vendor (CNA)
Linux Linux6.6.148Vendor (CNA)
Linux Linux9409e18ffe7378d202efe1cf69989df9f67b0369Vendor (CNA)
Linux Linuxa3f3859cecacb64f18fd446271ece9a3b3f2d4deVendor (CNA)
Linux Linuxe2a3b77df6aef031455dd83ea8ed4344b7dca1f9Vendor (CNA)
Linux Linuxf5c5065963024390ddad51bd455d1adc710de575Vendor (CNA)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.101-1~deb12u1 · 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.

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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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

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

All records