CVE-2026-98747

A flaw was found in the Linux kernel's serial core subsystem. This flaw allows a local user with administrative access to cause a Denial of Service DoS by crashing the system. The issue occurs during the unregistration of a serial port that failed during initial setup or was previously torn down,...

CVE-2026-98747 serial: core: fix NULL pointer dereference in serial_core_unregister_port()

In the Linux kernel, the following vulnerability has been resolved: serial: core: fix NULL pointer dereference in serialcoreunregisterport port-portdev is NULL when no port device is installed: it is cleared on teardown, and never set if registration failed before serialcoreportdeviceadd...

CVE-2026-98747

The Linux kernel contains a NULL pointer dereference vulnerability in the serial_core_unregister_port() function. The issue occurs because port->port_dev is NULL when no port device is installed—either because it was cleared during teardown or never set due to a registration failure in serial_...

CVE-2026-98747 serial: core: fix NULL pointer dereference in serial_core_unregister_port()

In the Linux kernel, the following vulnerability has been resolved: serial: core: fix NULL pointer dereference in serialcoreunregisterport port-portdev is NULL when no port device is installed: it is cleared on teardown, and never set if registration failed before serialcoreportdeviceadd...

Linux Distros Unpatched Vulnerability : CVE-2026-98747

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - serial: core: fix NULL pointer dereference in serialcoreunregisterport port-portdev is NULL when no port device is installed: it is cleared on teardown, and nev...

PT-2026-116966

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...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: serial: core: check uartclk for zero to avoid divide by zero Calling ioctl TIOCSSERIAL with an invalid baudbase can result in uartclk being zero, which will cause a divide by zero error in uartgetdivisor. The check for uartclk...

CVE-2026-90336

A flaw was found in the Linux kernel's serial core component. When uartregisterdriver fails, pointers to freed memory are not properly cleared. This can allow a local attacker to cause a use-after-free condition by repeatedly attempting to register and bind a serial port. Successful exploitation ...

CVE-2026-90337

A flaw was found in the Linux kernel's serial core component. This vulnerability occurs when the system attempts to allocate resources for a serial port after the console has been registered. If this allocation fails, the driver may improperly handle the port, leading to memory corruption issues...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: serial: core: Fixed the issue where the transmit-buffer was not freed after closing the serial port. The commit 761ed4a94582 “tty: serialcore: changed uartclose to use ttyportclose” converted the serial core to use ttyportclos...

DEBIAN-CVE-2026-90337

In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serialcoreaddoneport allocates uport-ttygroups after uartconfigureport, which may register the console. If the allocation fails, the driver unwinds the po...

DEBIAN-CVE-2026-90336

In the Linux kernel, the following vulnerability has been resolved: serial: core: clear freed pointers on uartregisterdriver failure uartregisterdriver leaves drv-state pointing to freed memory when ttyallocdriver fails. If ttyregisterdriver fails, drv-ttydriver also retains a pointer after its...

AZL-102156 CVE-2026-90336 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: serial: core: clear freed pointers on uartregisterdriver failure uartregisterdriver leaves drv-state pointing to freed memory when ttyallocdriver fails. If ttyregisterdriver fails, drv-ttydriver also retains a pointer after its...

AZL-102414 CVE-2026-90337 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serialcoreaddoneport allocates uport-ttygroups after uartconfigureport, which may register the console. If the allocation fails, the driver unwinds the po...

CVE-2026-90337

In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serialcoreaddoneport allocates uport-ttygroups after uartconfigureport, which may register the console. If the allocation fails, the driver unwinds the po...

CVE-2026-90336

In the Linux kernel, the following vulnerability has been resolved: serial: core: clear freed pointers on uartregisterdriver failure uartregisterdriver leaves drv-state pointing to freed memory when ttyallocdriver fails. If ttyregisterdriver fails, drv-ttydriver also retains a pointer after its...

CVE-2026-90337 serial: core: do fallible allocations before the console can be registered

In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serialcoreaddoneport allocates uport-ttygroups after uartconfigureport, which may register the console. If the allocation fails, the driver unwinds the po...

CVE-2026-90336 serial: core: clear freed pointers on uart_register_driver() failure

In the Linux kernel, the following vulnerability has been resolved: serial: core: clear freed pointers on uartregisterdriver failure uartregisterdriver leaves drv-state pointing to freed memory when ttyallocdriver fails. If ttyregisterdriver fails, drv-ttydriver also retains a pointer after its...

CVE-2026-90337

CVE-2026-90337 is a Linux kernel vulnerability in the serial core . In serial_core_add_one_port(), the uport->tty_groups and uport->name allocations occur after uart_configure_port() registers the console. If an allocation fails, the driver unwinds the port while its console remains registe...

CVE-2026-90337 serial: core: do fallible allocations before the console can be registered

In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serialcoreaddoneport allocates uport-ttygroups after uartconfigureport, which may register the console. If the allocation fails, the driver unwinds the po...