CVE-2026-90221
kernel: nfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 13, 2026
Description
A flaw was found in the Linux kernel's Near Field Communication (NFC) NCI (NFC Controller Interface) component. A remote attacker could exploit this by injecting a specially crafted CORE_INIT_RSP packet. This malformed packet, which declares more supported radio frequency interfaces than it provides data for, causes the system to read uninitialized memory. This can lead to information disclosure from the kernel's memory.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-824 · Access of Uninitialized Pointer