Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-80983
Published: September 12, 2026
Vulnerability identifier: #VU149416
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80983
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in smc_switch_conns() when handling connection switches during SMC link failover. A local user can initiate a connection switch during link failover to cause a denial of service.
The target link must go down or the connection must be killed while the switch is in progress.
Affected software
Linux kernel
How to mitigate CVE-2026-80983
Install security update from vendor's repository.