Use-after-free in Linux kernel - CVE-2026-97583
Published: September 28, 2026
Vulnerability identifier: #VU152620
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97583
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to a use-after-free in AFS peer application-data handling when handling an RxRPC callback after an AFS fileserver address-list refresh. A remote attacker can trigger a callback through an RxRPC connection associated with a removed peer to execute arbitrary code.
User interaction is required.
Affected software
Linux kernel
How to mitigate CVE-2026-97583
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3