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NVD / CVE Program· CNA Linux

CVE-2026-89871: media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure

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 0e7f2cd72a4f9268ee09a13b13f3339e7cc71557, 0fac63cac6689588da530764ccb6ba55ee8e4d8b, 3d1b10d81fe54852ed953f4129577b733bbd6907; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0e7f2cd72a4f9268ee09a13b13f3339e7cc71557, 0fac63cac6689588da530764ccb6ba55ee8e4d8b, 3d1b10d81fe54852ed953f4129577b733bbd6907; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 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: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure kthread_run() returns an ERR_PTR on failure, not NULL. When start_streaming() fails, data->kthread_vid_cap is left holding this error pointer instead of being cleared. This causes two subsequent bugs: 1. A future call to start_streaming() sees a non-NULL kthread_vid_cap and returns 0 (success) immediately, without actually starting the capture thread. 2. A call to stop_streaming() checks 'kthread_vid_cap == NULL' which is false for an error pointer, and proceeds to call kthread_stop() on the error pointer, leading to a kernel crash. Fix this by resetting kthread_vid_cap to NULL on failure before jumping to the error path.

—No exploit Fix available
Published
Sep 16, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th 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%

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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  • when exploit code appears or is weaponized
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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.

—

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

    • 4.18affected
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before db0f4531aa55cfb0171684ebfffe3ff04b79d5a8affected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 0fac63cac6689588da530764ccb6ba55ee8e4d8baffected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 5c35d380bea60503c4fe0986fe1de6a3263282b3affected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 3d1b10d81fe54852ed953f4129577b733bbd6907affected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 968c5213e34c48d35febdfd09cf3dc58ad039140affected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6affected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 0e7f2cd72a4f9268ee09a13b13f3339e7cc71557affected · git
    • 5cebaac609744414463d1ecc28fdecd26c1b9bc1 and later · before 76e379754ba618989f6215be608d5c04774a611daffected · git
    • before 4.18not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-89869Sep 16, 2026 · media: qcom: iris: use disable_irq() during power-off
    0Monitor
  • ← EarlierCVE-2026-89870Sep 16, 2026 · media: zoran: Avoid freeing a registered video_device twice
    31Monitor
  • Later →CVE-2026-89872Sep 16, 2026 · media: v4l2-fwnode: Fix fwnode leak in v4l2_fwnode_parse_link
    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 Linux0e7f2cd72a4f9268ee09a13b13f3339e7cc71557Vendor (CNA)
Linux Linux0fac63cac6689588da530764ccb6ba55ee8e4d8bVendor (CNA)
Linux Linux3d1b10d81fe54852ed953f4129577b733bbd6907Vendor (CNA)
Linux Linux52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6Vendor (CNA)
Linux Linux5c35d380bea60503c4fe0986fe1de6a3263282b3Vendor (CNA)
Linux Linux76e379754ba618989f6215be608d5c04774a611dVendor (CNA)
Linux Linux968c5213e34c48d35febdfd09cf3dc58ad039140Vendor (CNA)
Linux Linuxdb0f4531aa55cfb0171684ebfffe3ff04b79d5a8Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~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✗ → ✓

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

References

Show all references (7 more)

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

All records