NVD / CVE Program· CNA Linux

CVE-2026-46177: ipmi: Add limits to event and receive message requests

Noroxi assessment

Priority: Monitor (action score 30/100)

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: 0.56% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 112df8e631636cafda64dcee4561daf09ce74a4a, 304b56883b7eff73eb606c35d062c8101aaf5471, 3d37d2165df9504ea99d9e6181552dc4d2d1ab37; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 112df8e631636cafda64dcee4561daf09ce74a4a, 304b56883b7eff73eb606c35d062c8101aaf5471, 3d37d2165df9504ea99d9e6181552dc4d2d1ab37; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1 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: ipmi: Add limits to event and receive message requests The driver would just fetch events and receive messages until the BMC said it was done. To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a time. In addition, an si interface has an attn state it can return from the hardware which is supposed to cause a flag fetch to see if the driver needs to fetch events or message or a few other things. If the attn bit gets stuck, it's a similar problem. So allow messages in between flag fetches so the driver itself doesn't get stuck. This is a more general fix than the previous fix for the specific bad BMC, but should fix the more general issue of a BMC that won't stop saying it has data. This has been there from the beginning of the driver. It's not a bug per-se, but it is accounting for bugs in BMCs.

HighCVSS 7.5 · v3.1—No exploit Fix available

Published: May 28, 2026
Updated: Oct 15, 2026
EPSS: 0.5% · 47th percentile
CWE: —

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CNA vs NVD score

NVD: —
CNA · Linux: 7.5; 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.

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.

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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel2.6.12.1 and later · before 5.10.258
linux linux kernel5.11 and later · before 5.15.209
linux linux kernel5.16 and later · before 6.1.175
linux linux kernel6.2 and later · before 6.6.140
linux linux kernel6.7 and later · before 6.12.88
linux linux kernel6.13 and later · before 6.18.30
linux linux kernel6.19 and later · before 7.0.7
linux linux kernel2.6.12
linux linux kernel7.1

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
- 2.6.12affected
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 112df8e631636cafda64dcee4561daf09ce74a4aaffected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 304b56883b7eff73eb606c35d062c8101aaf5471affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 9059dc94421e1d4f8e5844204608b37ebfddb3daaffected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 67c44e0deba936d5edaebea356b4589eb43acb5caffected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before e20212b431bef217d3886b86bbc90cc3ed00de68affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 3d37d2165df9504ea99d9e6181552dc4d2d1ab37affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before c024167fb00489baee08c72182ca2e7dc5fb9f20affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before c4cca236968683eb0d59abfb12d5c7e4d8514227affected · git
- before 2.6.12not affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.176-1	6.1.176-1
Debian:13	linux	before 6.12.88-1	6.12.88-1
Debian:14	linux	before 7.0.7-1	7.0.7-1

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-2026-46175May 28, 2026 · f2fs: fix fsck inconsistency caused by FGGC of node block
28Monitor
← EarlierCVE-2026-46176May 28, 2026 · RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
31Monitor
Later →CVE-2026-46178May 28, 2026 · RDMA/mlx4: Fix resource leak on error in mlx4_ib_create_srq()
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	112df8e631636cafda64dcee4561daf09ce74a4a	Vendor (CNA)
Linux Linux	304b56883b7eff73eb606c35d062c8101aaf5471	Vendor (CNA)
Linux Linux	3d37d2165df9504ea99d9e6181552dc4d2d1ab37	Vendor (CNA)
Linux Linux	67c44e0deba936d5edaebea356b4589eb43acb5c	Vendor (CNA)
Linux Linux	9059dc94421e1d4f8e5844204608b37ebfddb3da	Vendor (CNA)
Linux Linux	c024167fb00489baee08c72182ca2e7dc5fb9f20	Vendor (CNA)
Linux Linux	c4cca236968683eb0d59abfb12d5c7e4d8514227	Vendor (CNA)
Linux Linux	e20212b431bef217d3886b86bbc90cc3ed00de68	Vendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.0	6.6.141.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	6.1.176-1 · Debian:12	Package 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-26-0290 · Jun 2, 2026(Linux Kernel Güvenlik Bildirimi)

All national notices →

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
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: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

Change log

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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

References

git.kernel.org/stable/c/112df8e631636cafda64dcee4561daf09ce74a4a

Show all references (8 more)

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

All records