Out-of-bounds read in Linux kernel - CVE-2026-89583
Published: September 12, 2026
Vulnerability identifier: #VU149226
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89583
CWE-ID: CWE-125
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in eir_get_service_data() when processing periodic advertising data containing mismatching Service Data fields. A remote attacker can transmit a crafted periodic advertising payload to disclose sensitive information.
Exploitation requires an ISO broadcast sink to process periodic advertising reports from a remote broadcaster.
Affected software
Linux kernel
How to mitigate CVE-2026-89583
Install security update from vendor's repository.