NVD / CVE Program· CNA Linux

CVE-2026-46219: spi: mpc52xx: 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: 0.13% (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 0944b20e9dfa2917bd70eb5b301cbb67fe54a718, 5.10.258, 5.15.209; 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 0944b20e9dfa2917bd70eb5b301cbb67fe54a718, 5.10.258, 5.15.209; 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: mpc52xx: fix use-after-free on unbind The state machine work is scheduled by the interrupt handler and therefore needs to be cancelled after disabling interrupts to avoid a potential use-after-free.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2026-14150

Published: May 28, 2026
Updated: Jun 17, 2026
EPSS: 0.1% · 2th 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 kernel5.4.287 and later · before 5.5
linux linux kernel5.10.231 and later · before 5.10.258
linux linux kernel5.15.174 and later · before 5.15.209
linux linux kernel6.1.120 and later · before 6.1.175
linux linux kernel6.6.66 and later · before 6.6.140
linux linux kernel6.12.5 and later · before 6.12.90
linux linux kernel6.13.1 and later · before 6.18.32
linux linux kernel6.19 and later · before 7.0.9
linux linux kernel6.13

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
- d0cde3911cf24e1bcdd4caa1d1b9ef57589db5a1, 6.13affected
- e0c6ce8424095c2da32a063d3fc027494c689817 and later · before ac8316c896c79f32c1d0a38cb41fd2b14cf8112eaffected · git
- cd5106c77d6d6828aa82449f01f4eb436d602a21 and later · before ed929d40963073f23cfb50219ccbcc6e0c3ea641affected · git
- 373d55a47dc662e5e30d12ad5d334312f757c1f1 and later · before 0944b20e9dfa2917bd70eb5b301cbb67fe54a718affected · git
- f65d85bc1ffd8a2c194bb2cd65e35ed3648ddd59 and later · before bb6b50f709c5a01906ff72a07fdc070bb3357188affected · git
- 90b72189de2cddacb26250579da0510b29a8b82b and later · before ee52da0dd83ebcd89ecbbe2660c57b15a25489f2affected · git
- 984836621aad98802d92c4a3047114cf518074c8 and later · before 6c3e413919a12627d04a31a4a5fccb9fc129bb02affected · git
- 984836621aad98802d92c4a3047114cf518074c8 and later · before bbcd6dd8e9f264440eaf6167382bf404911c1c46affected · git
- 984836621aad98802d92c4a3047114cf518074c8 and later · before 706b3dc2ac7a998c55e14b3fd2e8f934c367e6e0affected · git
- 5.10.231 and later · before 5.10.258affected · 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	from 0	—
Debian:13	linux	before 6.12.90-1	6.12.90-1
Debian:14	linux	before 7.0.9-1	7.0.9-1

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-2026-46215May 28, 2026 · drm: Set old handle to NULL before prime swap in change_handle
31Monitor
← EarlierCVE-2026-46218May 28, 2026 · drm/amdgpu: Add bounds checking to ib_{get,set}_value
28Monitor
Later →CVE-2026-46221May 28, 2026 · EDAC/versalnet: Fix device name memory leak
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	0944b20e9dfa2917bd70eb5b301cbb67fe54a718	Vendor (CNA)
Linux Linux	5.10.258	Vendor (CNA)
Linux Linux	5.15.209	Vendor (CNA)
Linux Linux	5.5	Vendor (CNA)
Linux Linux	6.1.175	Vendor (CNA)
Linux Linux	6.12.90	Vendor (CNA)
Linux Linux	6.6.140	Vendor (CNA)
Linux Linux	6c3e413919a12627d04a31a4a5fccb9fc129bb02	Vendor (CNA)
Linux Linux	706b3dc2ac7a998c55e14b3fd2e8f934c367e6e0	Vendor (CNA)
Linux Linux	ac8316c896c79f32c1d0a38cb41fd2b14cf8112e	Vendor (CNA)
Linux Linux	bb6b50f709c5a01906ff72a07fdc070bb3357188	Vendor (CNA)
Linux Linux	bbcd6dd8e9f264440eaf6167382bf404911c1c46	Vendor (CNA)
Linux Linux	ed929d40963073f23cfb50219ccbcc6e0c3ea641	Vendor (CNA)
Linux Linux	ee52da0dd83ebcd89ecbbe2660c57b15a25489f2	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	6.12.90-1 · Debian:13	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

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, 10:10 PM UTC

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

References

git.kernel.org/stable/c/0944b20e9dfa2917bd70eb5b301cbb67fe54a718

Show all references (7 more)

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

All records