SB2026081314 - Red Hat Enterprise Linux 9 update for kernel

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026081314

SB2026081314 - Red Hat Enterprise Linux 9 update for kernel

Published: August 13, 2026

Security Bulletin ID SB2026081314
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Stack-based buffer overflow (CVE-ID: CVE-2026-53202)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to a stack-based buffer overflow in the ivpu_ipc_receive function when processing firmware-supplied IPC message data. A local user can supply a crafted data_size value to trigger an oversized memcpy operation and execute arbitrary code.

Exploitation requires control over firmware-supplied message data.


2) Use-after-free (CVE-ID: CVE-2026-53264)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/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 a use-after-free in the net/sched action lifecycle handling in act_api when NEWTFILTER and DELFILTER are run concurrently. A local user can trigger concurrent filter operations to cause a denial of service.

The issue arises from a race between action lookup and action deletion under RCU-protected access.


Remediation

Install update from vendor's website.

References