CVE-2026-89879Hinoki check available

Kernel memory corruption via oversized JPEG frame

Published Sep 16, 2026 · Updated Sep 16, 2026

Out-of-bounds write in the Linux s2255 USB video driver allows physically proximate attackers to corrupt kernel memory via crafted JPEG frames. s2255_fillbuff copies the header-controlled signed jpg_size into a vb2 plane without rejecting negative values or sizes that exceed the destination. Exploitation requires a malicious Sensoray 2255-family capture device to deliver a malformed JPEG or MJPEG frame, and the bounded consequence is kernel-memory corruption.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds write in the Linux s2255 USB video driver allows physically proximate attackers to corrupt kernel memory via crafted JPEG frames. s2255_fillbuff copies the header-controlled signed jpg_size into a vb2 plane without rejecting negative values or sizes that exceed the destination. Exploitation requires a malicious Sensoray 2255-family capture device to deliver a malformed JPEG or MJPEG frame, and the bounded consequence is kernel-memory corruption.

The record

CVE
CVE-2026-89879
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.27
  2. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <2542516a147bfad740e7e411c251b639fad260ff
  3. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <32a595dd3e8634544e5cfbc47f906dff3d3c1ef8
  4. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <4b6f7bccc6559ae5c54573c284fe76eafc9989b2
  5. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <68d664f1b4efe525e99154b7058fcb0378bdaff7
  6. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77
  7. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <d2ecaaab6a4f165abb54cdf61be60030b5782bf8
  8. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <dd739517560c8d0ec4463a53e717bf40b988d7da
  9. Affected versionversion=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <e504cc888f42999dd76b6a43788c422610f2aad2

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <2542516a147bfad740e7e411c251b639fad260ff; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <32a595dd3e8634544e5cfbc47f906dff3d3c1ef8; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <4b6f7bccc6559ae5c54573c284fe76eafc9989b2; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <68d664f1b4efe525e99154b7058fcb0378bdaff7; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <d2ecaaab6a4f165abb54cdf61be60030b5782bf8; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <dd739517560c8d0ec4463a53e717bf40b988d7da; version=38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <e504cc888f42999dd76b6a43788c422610f2aad2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1200Hardware Additions

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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