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CVE Record

CVE-2015-9289: In the Linux kernel before 4.1.4, a buffer overflow occurs when checking userspace params in drivers/media/...

In the Linux kernel before 4.1.4, a buffer overflow occurs when checking userspace params in drivers/media/dvb-frontends/cx24116.c. The maximum size for a DiSEqC command is 6, according to the userspace API. However, the code allows larger values such as 23.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2015-9289 is a Linux kernel driver flaw in older kernels before 4.1.4. It involves improper size checking for DiSEqC commands in a DVB frontend driver, creating a buffer overflow condition. Business urgency depends on whether affected kernels and relevant media hardware or device access exist in the environment.

Executive priority

Set priority after asset validation. This is old kernel code with no supplied evidence of active exploitation, but it can matter for legacy Linux systems with relevant DVB driver exposure. Remediate through normal kernel maintenance unless validation finds exposed legacy hosts.

Technical view

The issue is in drivers/media/dvb-frontends/cx24116.c. The userspace API limits DiSEqC commands to 6 bytes, but the affected code accepted larger values, such as 23, causing a buffer overflow while checking userspace parameters. The source bundle identifies Linux kernel versions before 4.1.4 as affected.

Likely exposure

Exposure is most plausible on Linux systems running kernels before 4.1.4 with the cx24116 DVB frontend driver present or reachable. General server fleets without DVB hardware or device access may have little practical exposure, but the bundle does not provide enough detail to exclude risk categorically.

Exploitation context

The provided sources do not report active exploitation, public weaponization, CVSS scoring, required privileges, or impact details. It is not listed as CISA KEV in the supplied bundle. Treat exploitation status as unconfirmed rather than active.

Researcher notes

The public record is sparse: no CVSS, CWE, privilege requirement, impact classification, or detailed affected product list is supplied. Analysis should stay anchored to the upstream commit, Linux 4.1.4 changelog, and local confirmation of driver presence and reachable userspace interfaces.

Mitigation direction

  • Check vendor kernel advisories for CVE-2015-9289 and affected package mappings.
  • Upgrade to a vendor-supported kernel containing the referenced upstream fix.
  • Inventory systems running Linux kernels before 4.1.4.
  • Review whether DVB frontend hardware or cx24116 driver support is present.
  • Restrict unnecessary access to relevant media device nodes pending vendor guidance.

Validation and detection

  • Confirm kernel versions across the fleet, prioritizing versions before 4.1.4.
  • Check whether the cx24116 DVB frontend driver is built, loaded, or packaged.
  • Review asset roles for untrusted local user access to media devices.
  • Verify vendor kernel packages include commit 1fa2337a315a2448c5434f41e00d56b01a22283c.
  • Document unaffected systems where DVB support is absent or inaccessible.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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