Use of uninitialized resource in Linux kernel - CVE-2026-43088
Published: May 7, 2026
Vulnerability identifier: #VU130665
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43088
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an information exposure caused by uninitialized memory in PF_KEY export paths when exporting aligned sockaddr payloads for certain PF_KEY messages. A local user can trigger affected PF_KEY message handling to disclose sensitive information.
The issue affects the SADB_ACQUIRE, SADB_X_NAT_T_NEW_MAPPING, and SADB_X_MIGRATE export paths, while state and policy dump builders are not affected.
How to mitigate CVE-2026-43088
Install security update from vendor's repository.