Heap-based buffer overflow in Linux kernel - CVE-2026-89497
Published: September 12, 2026
Vulnerability identifier: #VU149315
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89497
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to write past the end of an allocated keyword buffer.
The vulnerability exists due to a heap-based buffer overflow in orangefs_prepare_cdm_array() when processing a client debug entry that begins with a space. A local user can supply a client debug entry beginning with a space to write past the end of an allocated keyword buffer.
Affected software
Linux kernel
How to mitigate CVE-2026-89497
Install security update from vendor's repository.