Out-of-bounds read in Linux kernel - CVE-2026-98088
Published: September 28, 2026
Vulnerability identifier: #VU152368
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-2026-98088
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause an out-of-bounds read.
The vulnerability exists due to improper handling of an invalid NUMA node value in _base_assign_reply_queues() when assigning high IOPS reply queues for a PCI device without NUMA-node affinity. A local user can trigger reply queue assignment to cause an out-of-bounds read.
The issue occurs when dev_to_node() returns NUMA_NO_NODE (-1).
Affected software
Linux kernel
How to mitigate CVE-2026-98088
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3