Skip to content
Noroxi
CVE-2026-81007· NVD / CVE Program· CNA Linux

ipmi: ipmb: validate write message length

In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: validate write message length ipmb_write() read message fields before validating the length byte. A zero or short write can read uninitialized stack bytes. A length smaller than the SMBus header underflows the block write length. Require a non-empty buffer and the minimum IPMB request length. Also require the length byte plus payload before parsing the message.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Sep 11, 2026
Updated
Sep 14, 2026
EPSS
0.2% · 5th 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

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
—
CNA · Linux
7.1
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.

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

    • 5.3affected
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before 8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89affected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before 94f8d20153e348c79bc14dc25f873470518892daaffected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before e527cd4e80066e1ed070fdc7c705bde340cdcc62affected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before 7d66d54b974cff0a959e188af844d2d110422767affected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before 60939bcda6f3f104ef456fdbf3cc5733c0720fb1affected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before 5719431ca2b5fa26560bb38f6202f8b97fa3bbb0affected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before a84c6e3d188f2c6e674910929eb790634299d6d5affected · git
    • 51bd6f291583684f495ea498984dfc22049d7fd2 and later · before 53637506884dbd5c91a89b1a3547d99d80f8ed2caffected · git
    • before 5.3not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxall versions—
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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 Linux53637506884dbd5c91a89b1a3547d99d80f8ed2cVendor (CNA)
Linux Linux5719431ca2b5fa26560bb38f6202f8b97fa3bbb0Vendor (CNA)
Linux Linux60939bcda6f3f104ef456fdbf3cc5733c0720fb1Vendor (CNA)
Linux Linux7d66d54b974cff0a959e188af844d2d110422767Vendor (CNA)
Linux Linux8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89Vendor (CNA)
Linux Linux94f8d20153e348c79bc14dc25f873470518892daVendor (CNA)
Linux Linuxa84c6e3d188f2c6e674910929eb790634299d6d5Vendor (CNA)
Linux Linuxe527cd4e80066e1ed070fdc7c705bde340cdcc62Vendor (CNA)
debian:linux6.12.111-1 · Debian:13Package 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

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
high · data can be read
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
High
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:H/I:N/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.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; 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

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