Improper resource shutdown or release in Linux kernel - CVE-2026-64281
Published: July 27, 2026
Vulnerability identifier: #VU139710
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64281
CWE-ID: CWE-404
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in svc_rdma_sq_wait() and the svcrdma transport close path when handling transport teardown and disconnect events. A remote attacker can trigger transport disconnect or error conditions to cause a denial of service.
The issue can leave threads stuck indefinitely in TASK_UNINTERRUPTIBLE state, pinning svc_xprt references and blocking transport cleanup.
Affected software
Linux kernel
How to mitigate CVE-2026-64281
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3