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Уязвимость функции hso_serial_tty_unregister драйвера USB HSO (High Speed Options) ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

ALT-PU-2021-5033: package `kernel-image-un-def` update to version 5.11.18-alt1

ALT-PU-2021-4997: package `kernel-image-std-def` update to version 5.10.33-alt1

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

In the Linux kernel, the following vulnerability has been resolved: n ...

ALT-PU-2021-1768: package `kernel-image-rt` update to version 4.19.189-alt1.rt78

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

ALT-PU-2021-1776: package `kernel-image-rpi-un` update to version 5.10.35-alt1

ALT-PU-2021-5019: package `kernel-image-xenomai` update to version 4.19.192-alt1.cip50.18

ALT-PU-2021-1833: package `kernel-image-mp` update to version 5.12.4-alt1

ALT-PU-2021-1862: package `kernel-image-rpi-def` update to version 5.10.36-alt1

ALT-PU-2021-1920: package `kernel-image-std-kvm` update to version 5.10.42-alt1

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel