NVD / CVE Program· CNA Linux

CVE-2026-46301: spi: topcliff-pch: fix use-after-free on unbind

Noroxi assessment

Priority: Monitor (action score 31/100)

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: 0.11% (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 0e8e57f9737ea257634db1d152fc430a0788a3e1, 36e58c436d2c2a797800427dc04d74ffd8b6ce1c, 43334836b907adc21eab3079d2e6b26754468786; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.

Low priority for now. Upgrade to Linux Linux 0e8e57f9737ea257634db1d152fc430a0788a3e1, 36e58c436d2c2a797800427dc04d74ffd8b6ce1c, 43334836b907adc21eab3079d2e6b26754468786; 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: spi: topcliff-pch: fix use-after-free on unbind Give the driver a chance to flush its queue before releasing the DMA buffers on driver unbind

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2026-13879

Published: Jun 8, 2026
Updated: Jul 23, 2026
EPSS: 0.1% · 1th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

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

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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.

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 kernel3.1 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

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
- 3.1affected
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before 43334836b907adc21eab3079d2e6b26754468786affected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before 36e58c436d2c2a797800427dc04d74ffd8b6ce1caffected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before 4ca90deeca1c7dd72c1c380ba8143565516def2daffected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before d79e92161b65832e0b8cad5f3d84d17e5cd7a970affected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before 8822980668c96b5aa251c1e2daec1873262b8f3faffected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before d50ef3553acbacce6f2843304d41d06dca358bb6affected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before 0e8e57f9737ea257634db1d152fc430a0788a3e1affected · git
- c37f3c2749b53225d36faa5c583203c5f12ae15b and later · before 9d72732fe70c11424bc90ed466c7ccfa58b42a9aaffected · git
- before 3.1not 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-2026-46297Jun 8, 2026 · net: libwx: use request_irq for VF misc interrupt
22Monitor
← EarlierCVE-2026-46299Jun 8, 2026 · hfsplus: fix held lock freed on hfsplus_fill_super()
28Monitor
Later →CVE-2026-46305Jun 8, 2026 · staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc
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 / package	Fixed version	Source
Linux Linux	0e8e57f9737ea257634db1d152fc430a0788a3e1	Vendor (CNA)
Linux Linux	36e58c436d2c2a797800427dc04d74ffd8b6ce1c	Vendor (CNA)
Linux Linux	43334836b907adc21eab3079d2e6b26754468786	Vendor (CNA)
Linux Linux	4ca90deeca1c7dd72c1c380ba8143565516def2d	Vendor (CNA)
Linux Linux	8822980668c96b5aa251c1e2daec1873262b8f3f	Vendor (CNA)
Linux Linux	9d72732fe70c11424bc90ed466c7ccfa58b42a9a	Vendor (CNA)
Linux Linux	d50ef3553acbacce6f2843304d41d06dca358bb6	Vendor (CNA)
Linux Linux	d79e92161b65832e0b8cad5f3d84d17e5cd7a970	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).

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

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

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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, 10:11 PM UTC

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

References

git.kernel.org/stable/c/0e8e57f9737ea257634db1d152fc430a0788a3e1

Show all references (7 more)

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

All records