CVE-2026-53202

Local privilege escalation via signed IPC truncation

Published Jun 25, 2026 · Updated Jun 25, 2026

Stack-based buffer overflow in Linux Kernel ivpu IPC handling allows local users to corrupt kernel memory through malformed firmware data. The receive path casts firmware-supplied data_size to signed int in min_t(), turning values of 0x80000000 or greater negative before an oversized memcpy overruns a stack buffer. Low privileges and local access are required; memory corruption can crash the kernel or elevate privileges.

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

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Summary

What happened

Stack-based buffer overflow in Linux Kernel ivpu IPC handling allows local users to corrupt kernel memory through malformed firmware data. The receive path casts firmware-supplied data_size to signed int in min_t(), turning values of 0x80000000 or greater negative before an oversized memcpy overruns a stack buffer. Low privileges and local access are required; memory corruption can crash the kernel or elevate privileges.

The record

CVE
CVE-2026-53202
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3b434a3445fff3149128db0169da864d67057325 <2821bf2b79e47f87e1dbdd9d25c78240965a97d6
  2. Affected versionversion=3b434a3445fff3149128db0169da864d67057325 <45cb105b8642c65e9be286f7058e92314efe7ea3
  3. Affected versionversion=3b434a3445fff3149128db0169da864d67057325 <4788556d4dd9d717037e385de178974e9649231d
  4. Affected versionversion=3b434a3445fff3149128db0169da864d67057325 <d9faef564438d1e4579c692c046603e7ada7bdf4
  5. Affected versionversion=6.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3b434a3445fff3149128db0169da864d67057325 <2821bf2b79e47f87e1dbdd9d25c78240965a97d6; version=3b434a3445fff3149128db0169da864d67057325 <45cb105b8642c65e9be286f7058e92314efe7ea3; version=3b434a3445fff3149128db0169da864d67057325 <4788556d4dd9d717037e385de178974e9649231d; version=3b434a3445fff3149128db0169da864d67057325 <d9faef564438d1e4579c692c046603e7ada7bdf4; version=6.8

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3redhat-SADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/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

CWE-787Out-of-bounds Write
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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