Improper handling of exceptional conditions in Linux kernel - CVE-2026-53292
Published: June 29, 2026
Vulnerability identifier: #VU135744
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53292
CWE-ID: CWE-755
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper exception handling in pn_socket_autobind() in net/phonet/socket.c when handling socket autobind during send operations. A local user can trigger a failed bind condition that reaches a BUG_ON() assertion to cause a denial of service.
The issue is reachable from a user-triggerable path and can panic the kernel when pn_socket_bind() returns -EINVAL while the socket port remains unset.
How to mitigate CVE-2026-53292
Install security update from vendor's repository.