NVD / CVE Program· CNA Linux

CVE-2026-64221: spi: ti-qspi: fix use-after-free after DMA setup failure

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: 0.12% (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 178b9b570c0f75fa7e691490520328b20d19138e, 1cd927002120678bd5d23c760246639caa53040e, 3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 178b9b570c0f75fa7e691490520328b20d19138e, 1cd927002120678bd5d23c760246639caa53040e, 3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6 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: ti-qspi: fix use-after-free after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to clear the DMA channel pointer also if buffer allocation fails to avoid passing a pointer to the released channel to the DMA engine (or trying to free the channel a second time on late probe errors or driver unbind). This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

Published: Jul 24, 2026
Updated: Aug 11, 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%

CNA vs NVD score

NVD: —
CNA · Linux: 7.8; 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.

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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 kernel4.12 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 6.6.142
linux linux kernel6.7 and later · before 6.12.92
linux linux kernel6.13 and later · before 6.18.34
linux linux kernel6.19 and later · before 7.0.11
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
- 4.12affected
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before 9c6f306a8140962c7284197db54b96fdb5f468d6affected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before 3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6affected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before d6f422b122922d1abee907d673bcc990e5f3672daffected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before f2dc841d7dc9063fe9b47ced869b1271e55052aeaffected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before 1cd927002120678bd5d23c760246639caa53040eaffected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before d7a076fb596c7b408ed6df74793a597990a6d860affected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before 178b9b570c0f75fa7e691490520328b20d19138eaffected · git
- c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 and later · before ea6ec3343e05f7937a53eb6d7617b3abdb4abc19affected · git
- before 4.12not 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 6.12.94-1	6.12.94-1
Debian:14	linux	before 7.0.12-1	7.0.12-1

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-2026-64218Jul 24, 2026 · batman-adv: bla: fix report_work leak on backbone_gw purge
31Monitor
← EarlierCVE-2026-64220Jul 24, 2026 · device property: set fwnode->secondary to NULL in fwnode_init()
22Monitor
Later →CVE-2026-64224Jul 24, 2026 · octeontx2-pf: fix double free in rvu_rep_rsrc_init()
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	178b9b570c0f75fa7e691490520328b20d19138e	Vendor (CNA)
Linux Linux	1cd927002120678bd5d23c760246639caa53040e	Vendor (CNA)
Linux Linux	3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6	Vendor (CNA)
Linux Linux	9c6f306a8140962c7284197db54b96fdb5f468d6	Vendor (CNA)
Linux Linux	d6f422b122922d1abee907d673bcc990e5f3672d	Vendor (CNA)
Linux Linux	d7a076fb596c7b408ed6df74793a597990a6d860	Vendor (CNA)
Linux Linux	ea6ec3343e05f7937a53eb6d7617b3abdb4abc19	Vendor (CNA)
Linux Linux	f2dc841d7dc9063fe9b47ced869b1271e55052ae	Vendor (CNA)
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.

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-26-0636 · Jul 27, 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-secondary

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, 10:09 PM UTC

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

References

git.kernel.org/stable/c/178b9b570c0f75fa7e691490520328b20d19138e

Show all references (7 more)

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

All records