Use-after-free in Linux kernel - CVE-2026-98083
Published: September 28, 2026
Vulnerability identifier: #VU152379
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98083
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to compromise confidentiality, integrity, and availability.
The vulnerability exists due to use-after-free in Btrfs RAID stripe insertion transaction handling when allocation of a RAID stripe extent fails. A local user can invoke the affected RAID stripe insertion path during this error condition to compromise confidentiality, integrity, and availability.
Affected software
Linux kernel
How to mitigate CVE-2026-98083
Install security update from vendor's repository.