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NVD / CVE Program· CNA Linux

CVE-2026-89878: media: s2255: check firmware size before reading trailing marker

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 330f2936ab768c7215322a476f033143e8891d28, 342632a4d8ba3fafc1556deee0b7a48dd7860336, 3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d; 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 330f2936ab768c7215322a476f033143e8891d28, 342632a4d8ba3fafc1556deee0b7a48dd7860336, 3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d; 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: s2255: check firmware size before reading trailing marker s2255_probe() reads a 4-byte marker and version from the last 8 bytes of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the firmware file is shorter than 8 bytes, fw_size - 8 underflows and the access reads out of bounds. Validate the firmware size before indexing.

—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 you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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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

    • 2.6.28affected
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 6f6a5b0b0a84c2de0e152f2841e57bc226db924faffected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 8eca0f85eeb0789be40e637bcf9a21c4265b6c6faffected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before ffc27411ea60b8a09f1fea3d664b65210fdeb454affected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 5626785b0e4665326e4d96736c106161da09b2f0affected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 3e03f1209c1c8a45a7bc559f4ecd79d9b33f706daffected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 342632a4d8ba3fafc1556deee0b7a48dd7860336affected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 7d221859ba45d7228d0138c9a3e55bd3bb31e14eaffected · git
    • 14d962602c8bf86e63c9b9272be1f0360d0a448a and later · before 330f2936ab768c7215322a476f033143e8891d28affected · git
    • before 2.6.28not 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-2026-89876Sep 16, 2026 · media: tda18250: fix possible integer overflow
    0Monitor
  • ← EarlierCVE-2026-89877Sep 16, 2026 · media: saa7164: fix cleanup on resource allocation failure
    33Monitor
  • Later →CVE-2026-89879Sep 16, 2026 · media: s2255: bound JPEG frame size before copying into the buffer
    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 Linux330f2936ab768c7215322a476f033143e8891d28Vendor (CNA)
Linux Linux342632a4d8ba3fafc1556deee0b7a48dd7860336Vendor (CNA)
Linux Linux3e03f1209c1c8a45a7bc559f4ecd79d9b33f706dVendor (CNA)
Linux Linux5626785b0e4665326e4d96736c106161da09b2f0Vendor (CNA)
Linux Linux6f6a5b0b0a84c2de0e152f2841e57bc226db924fVendor (CNA)
Linux Linux7d221859ba45d7228d0138c9a3e55bd3bb31e14eVendor (CNA)
Linux Linux8eca0f85eeb0789be40e637bcf9a21c4265b6c6fVendor (CNA)
Linux Linuxffc27411ea60b8a09f1fea3d664b65210fdeb454Vendor (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