Improper initialization in Linux kernel - CVE-2026-92515
Published: September 18, 2026
Vulnerability identifier: #VU150996
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-2026-92515
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to trigger a kernel warning.
The vulnerability exists due to improper initialization of uniqueness-tracking state in btf_find_struct_field() when processing crafted BTF containing duplicate unique special fields across nested structs. A remote attacker can submit crafted BTF to trigger a kernel warning.
The warning can be triggered before map-creation capability checks.
Affected software
Linux kernel
How to mitigate CVE-2026-92515
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3