CVE-2026-43283· NVD / CVE Program· CNA Linux

net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle

Noroxi assessment

Priority: Monitor (action score 35/100)

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: 0.17% (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 0f589ee54fd6d76d3f75e745f7f12c64cbd749e5, 1b1371cd4032ae859838ebc74215f569987bb197, 1b1d3c5d58a80a19d017a409aa2308162bab5bbf.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0f589ee54fd6d76d3f75e745f7f12c64cbd749e5, 1b1371cd4032ae859838ebc74215f569987bb197, 1b1d3c5d58a80a19d017a409aa2308162bab5bbf 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

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle dma_free_coherent() in error path takes priv->rx_buf.alloc_len as the dma handle. This would lead to improper unmapping of the buffer. Change the dma handle to priv->rx_buf.alloc_phys.

HighCVSS 8.8 · v3.1—No exploit Fix available

BDU:2026-11736

Published: May 6, 2026
Updated: Aug 5, 2026
EPSS: 0.2% · 7th percentile
CWE: —

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CNA vs NVD score

NVD: —
CNA · Linux: 8.8; 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 kernel3.15.1 and later · before 5.10.252
linux linux kernel5.11 and later · before 5.15.202
linux linux kernel5.16 and later · before 6.1.165
linux linux kernel6.2 and later · before 6.6.128
linux linux kernel6.7 and later · before 6.12.75
linux linux kernel6.13 and later · before 6.18.16
linux linux kernel6.19 and later · before 6.19.6
linux linux kernel3.15

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
- 3.15affected
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before 0f589ee54fd6d76d3f75e745f7f12c64cbd749e5affected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before accd0599bc8e73b962247c6c6c70ca7aa1f8e8d0affected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before 8320727be7ff704e07c87624efc2a4a75f54b3ceaffected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before 1e300c33ef3cc544c2b9c693778fe9490cfe9184affected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before 1b1371cd4032ae859838ebc74215f569987bb197affected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before 1b1d3c5d58a80a19d017a409aa2308162bab5bbfaffected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before 7e54ff938bebb173822b4c38b33fc164c1cabf92affected · git
- 6af55ff52b02d492d45db88df3e461fa51a6f753 and later · before ffe68c3766997d82e9ccaf1cdbd47eba269c4aa2affected · git
- before 3.15not 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 6.1.170-1	6.1.170-1
Debian:13	linux	before 6.12.85-1	6.12.85-1
Debian:14	linux	before 6.19.6-1	6.19.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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
CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
83Now
CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
77This week
CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
77This week
CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
77This week

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	0f589ee54fd6d76d3f75e745f7f12c64cbd749e5	Vendor (CNA)
Linux Linux	1b1371cd4032ae859838ebc74215f569987bb197	Vendor (CNA)
Linux Linux	1b1d3c5d58a80a19d017a409aa2308162bab5bbf	Vendor (CNA)
Linux Linux	1e300c33ef3cc544c2b9c693778fe9490cfe9184	Vendor (CNA)
Linux Linux	7e54ff938bebb173822b4c38b33fc164c1cabf92	Vendor (CNA)
Linux Linux	8320727be7ff704e07c87624efc2a4a75f54b3ce	Vendor (CNA)
Linux Linux	accd0599bc8e73b962247c6c6c70ca7aa1f8e8d0	Vendor (CNA)
Linux Linux	ffe68c3766997d82e9ccaf1cdbd47eba269c4aa2	Vendor (CNA)
debian:linux	6.1.170-1 · 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.

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

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

TR-26-0213 · May 12, 2026(Linux Kernel Güvenlik Bildirimi)

All national notices →

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: high · data or configuration can be modified
Availability: high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/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, 10:09 PM UTC

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

References

git.kernel.org/stable/c/0f589ee54fd6d76d3f75e745f7f12c64cbd749e5

Show all references (7 more)

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

All records