AZL-109137
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109137.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-109137
- Upstream
- Published
- 2026-10-18T16:17:28Z
- Modified
- 2026-10-19T14:16:31Z
- Summary
- CVE-2026-98747 affecting package kernel 6.6.157.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
serial: core: fix NULL pointer dereference in serial_core_unregister_port()
port->port_dev is NULL when no port device is installed: it is cleared on teardown, and never set if registration failed before serial_core_port_device_add(). serial_core_unregister_port() passes it straight to serial_core_get_ctrl_dev(), which dereferences it:
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] RIP: serial_core_unregister_port Call Trace: serial8250_unregister_port serial8250_remove unbind_store
Return early when there is no port device, and read port->port_dev under port_mutex.
Also clear port->port_dev on the serial_core_register_port() error path, where the port device has already been removed.
- References