SB20260828122 - Improper Check for Unusual or Exceptional Conditions in Linux kernel crypto ccp driver

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Main Vulnerability Database SB20260828122

SB20260828122 - Improper Check for Unusual or Exceptional Conditions in Linux kernel crypto ccp driver

Published: August 28, 2026

Security Bulletin ID SB20260828122
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-80652)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of a zero-length buffer in sev_ioctl_do_pdh_export() when processing a PDH export request. A local user can send a crafted ioctl request with a zero-length certificate chain buffer to cause a denial of service.

The issue results in a kernel BUG when CONFIG_DEBUG_VIRTUAL=y.


Remediation

Install update from vendor's website.

References