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NVD / CVE Program· CNA Linux

CVE-2026-68205: media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 067887ff93fddbb3a3fb84c900bc654ecfe5ba61, 06cb687a5132fcffe624c0070576ab852ac6b568, 47ef04cd13d38010b580056a9d8840aaab944841; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 067887ff93fddbb3a3fb84c900bc654ecfe5ba61, 06cb687a5132fcffe624c0070576ab852ac6b568, 47ef04cd13d38010b580056a9d8840aaab944841; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1 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: media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor() The v4l2 helper v4l2_async_register_subdev_sensor() calls v4l2_async_register_subdev(), which is a macro that expands to __v4l2_async_register_subdev(sd,THIS_MODULE). Since the macro is expanded inside v4l2-fwnode.c, THIS_MODULE resolves to the v4l2-fwnode module rather than the sensor driver module that originally set sd->owner. When v4l2-fwnode is built-in, THIS_MODULE evaluates to NULL, which then overwrites the sensor driver's owner with NULL. This causes the problem that the sensor module's reference count is never incremented during async registration, so the module can be removed while the subdevice is still in use by a notifier (e.g., a CSI-2 receiver bridge driver). Fix this by renaming v4l2_async_register_subdev_sensor() to __v4l2_async_register_subdev_sensor() with an added explicit module argument and introducing a wrapper macro: #define v4l2_async_register_subdev_sensor(sd) \ __v4l2_async_register_subdev_sensor(sd, THIS_MODULE) This ensures the sensor driver module is properly referenced even when the sensor driver does not init the owner field before calling v4l2_async_register_subdev_sensor() and prevents premature module removal.

—No exploit Fix available
Published
Aug 10, 2026
Updated
Aug 23, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

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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.

—

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

    • 4.15affected
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before f35e85a9d919d7954d9a7752e4644c0b403ad025affected · git
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before c5e47cf9a6cffef73a1ed40b3648e6097aac165aaffected · git
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before 47ef04cd13d38010b580056a9d8840aaab944841affected · git
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before caea6bc68c925d63ca33d21b2255f47181943d61affected · git
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before cf9732fd6c4f2f803ccfc46d89489b6635590270affected · git
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before 067887ff93fddbb3a3fb84c900bc654ecfe5ba61affected · git
    • aef69d54755d45edefbf347a51efd1673d7daed9 and later · before 06cb687a5132fcffe624c0070576ab852ac6b568affected · git
    • before 4.15not affected · semver
    • 5.10.266 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.101-1~deb12u16.12.101-1~deb12u1
Debian:13linuxbefore 6.12.101-16.12.101-1
Debian:14linuxbefore 7.1.6-17.1.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-68197Aug 10, 2026 · wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper
    0Monitor
  • ← EarlierCVE-2026-68204Aug 10, 2026 · media: vivid: check for vb2_is_busy() when toggling caps
    31Monitor
  • Later →CVE-2026-68207Aug 10, 2026 · media: ti: vpe: unwind v4l2 device registration on probe error
    0Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Linux Linux067887ff93fddbb3a3fb84c900bc654ecfe5ba61Vendor (CNA)
Linux Linux06cb687a5132fcffe624c0070576ab852ac6b568Vendor (CNA)
Linux Linux47ef04cd13d38010b580056a9d8840aaab944841Vendor (CNA)
Linux Linuxc5e47cf9a6cffef73a1ed40b3648e6097aac165aVendor (CNA)
Linux Linuxcaea6bc68c925d63ca33d21b2255f47181943d61Vendor (CNA)
Linux Linuxcf9732fd6c4f2f803ccfc46d89489b6635590270Vendor (CNA)
Linux Linuxf35e85a9d919d7954d9a7752e4644c0b403ad025Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.06.6.152.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.101-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.101-1~deb12u1 · Debian:12Package 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.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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

  1. Fix✗ → ✓

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References

Show all references (6 more)

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

All records