CVE-2025-39708

Local system crash via NULL packet dereference

Published Sep 5, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel Iris video driver 6.15 through 6.16.3 allows local users to crash the system. iris_hfi_gen2_handle_system_error reads the packet argument to log its type even though the system-response path can pass NULL. Reachability requires low-privileged local access and the Qualcomm Iris video-decoder path; the documented consequence is availability loss only.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel Iris video driver 6.15 through 6.16.3 allows local users to crash the system. iris_hfi_gen2_handle_system_error reads the packet argument to log its type even though the system-response path can pass NULL. Reachability requires low-privileged local access and the Qualcomm Iris video-decoder path; the documented consequence is availability loss only.

The record

CVE
CVE-2025-39708
Published
Sep 5, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.15
  2. Affected versionversion=fb583a214337a5600c121c9e1eecbb57fa9db688 <0f837559ccdd275c5a059e6ac4d5034b03409f1d
  3. Affected versionversion=fb583a214337a5600c121c9e1eecbb57fa9db688 <992ddee3c0da5f113ba86892ace467c1ac645538

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.15; version=fb583a214337a5600c121c9e1eecbb57fa9db688 <0f837559ccdd275c5a059e6ac4d5034b03409f1d; version=fb583a214337a5600c121c9e1eecbb57fa9db688 <992ddee3c0da5f113ba86892ace467c1ac645538

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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