7.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2023-52457: serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed

First published: Fri Feb 23 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed Returning an error code from .remove() makes the driver core emit the little helpful error message: remove callback returned a non-zero value. This will be ignored. and then remove the device anyhow. So all resources that were not freed are leaked in this case. Skipping serial8250_unregister_port() has the potential to keep enough of the UART around to trigger a use-after-free. So replace the error return (and with it the little helpful error message) by a more useful error message and continue to cleanup.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=5.4.225<5.4.268
Linux Linux kernel>=5.10.156<5.10.209
Linux Linux kernel>=5.15.80<5.15.148
Linux Linux kernel>=6.0.10<6.1.75
Linux Linux kernel>=6.2<6.6.14
Linux Linux kernel>=6.7<6.7.2
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1
>=5.4.225<5.4.268
>=5.10.156<5.10.209
>=5.15.80<5.15.148
>=6.0.10<6.1.75
>=6.2<6.6.14
>=6.7<6.7.2

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