CVE-2025-68808

Kernel memory corruption via stale ownership pointers

Published Jan 13, 2026 · Updated Jan 13, 2026

Double-free in Linux Kernel 5.10 and later allows local users to corrupt kernel memory through the vidtv test-driver initialization path. vidtv_channel_si_init transfers program, service, and event objects to PAT, SDT, and EIT tables but leaves the corresponding local pointers non-NULL. Low-privileged local access and a PMT-section creation failure reach cleanup that destroys an already-freed event, causing a kernel crash or corrupted kernel state.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double-free in Linux Kernel 5.10 and later allows local users to corrupt kernel memory through the vidtv test-driver initialization path. vidtv_channel_si_init transfers program, service, and event objects to PAT, SDT, and EIT tables but leaves the corresponding local pointers non-NULL. Low-privileged local access and a PMT-section creation failure reach cleanup that destroys an already-freed event, causing a kernel crash or corrupted kernel state.

The record

CVE
CVE-2025-68808
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=3be8037960bccd13052cfdeba8805ad785041d70 <30f4d4e5224a9e44e9ceb3956489462319d804ce
  2. Affected versionversion=3be8037960bccd13052cfdeba8805ad785041d70 <3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e
  3. Affected versionversion=3be8037960bccd13052cfdeba8805ad785041d70 <98aabfe2d79f74613abc2b0b1cef08f97eaf5322
  4. Affected versionversion=3be8037960bccd13052cfdeba8805ad785041d70 <a69c7fd603bf5ad93177394fbd9711922ee81032
  5. Affected versionversion=3be8037960bccd13052cfdeba8805ad785041d70 <fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8
  6. Affected versionversion=5.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3be8037960bccd13052cfdeba8805ad785041d70 <30f4d4e5224a9e44e9ceb3956489462319d804ce; version=3be8037960bccd13052cfdeba8805ad785041d70 <3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e; version=3be8037960bccd13052cfdeba8805ad785041d70 <98aabfe2d79f74613abc2b0b1cef08f97eaf5322; version=3be8037960bccd13052cfdeba8805ad785041d70 <a69c7fd603bf5ad93177394fbd9711922ee81032; version=3be8037960bccd13052cfdeba8805ad785041d70 <fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8; version=5.10

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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