Поиск уязвимостей

In the Linux kernel, the following vulnerability has been resolved: aio: fix use-after-free due to missing POLLFREE handling signalfd_poll() and binder_poll() are special in that they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This is okay for blocking polls, since a blocking poll occurs within one task; however, non-blocking polls require another solution. This solution is for the queue to be cleared before it is freed, by sending a POLLFREE notification to all waiters. Unfortunately, only eventpoll handles POLLFREE. A second type of non-blocking poll, aio poll, was added in kernel v4.18, and it doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with aio poll, and the waitqueue gets freed. Fix this by making aio poll handle POLLFREE. A patch by Ramji Jiyani <ramjiyani@google.com> (https://lore.kernel.org/r/20211027011834.2497484-1-ramjiyani@google.com) tried to do this...

In the Linux kernel, the following vulnerability has been resolved: aio: fix use-after-free due to missing POLLFREE handling signalfd_poll() and binder_poll() are special in that they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This is okay for blocking polls, since a blocking poll occurs within one task; however, non-blocking polls require another solution. This solution is for the queue to be cleared before it is freed, by sending a POLLFREE notification to all waiters. Unfortunately, only eventpoll handles POLLFREE. A second type of non-blocking poll, aio poll, was added in kernel v4.18, and it doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with aio poll, and the waitqueue gets freed. Fix this by making aio poll handle POLLFREE. A patch by Ramji Jiyani <ramjiyani@google.com> (https://lore.kernel.org/r/20211027011834.2497484-1-ramjiyani@google.com) tried to do this...

In the Linux kernel, the following vulnerability has been resolved: aio: fix use-after-free due to missing POLLFREE handling signalfd_poll() and binder_poll() are special in that they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This is okay for blocking polls, since a blocking poll occurs within one task; however, non-blocking polls require another solution. This solution is for the queue to be cleared before it is freed, by sending a POLLFREE notification to all waiters. Unfortunately, only eventpoll handles POLLFREE. A second type of non-blocking poll, aio poll, was added in kernel v4.18, and it doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with aio poll, and the waitqueue gets freed. Fix this by making aio poll handle POLLFREE. A patch by Ramji Jiyani <ramjiyani@google.com> (https://lore.kernel.org/r/20211027011834.2497484-1-ramjiyani@google.com) tried to do th

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

Уязвимость компонента aio ядра операционной системы Linux, позволяющая нарушителю повысить привилегии в системе

ALT-PU-2021-5013: package `kernel-image-std-def` update to version 5.10.85-alt1

ALT-PU-2021-4871: package `kernel-image-std-def` update to version 5.10.85-alt1

Множественные уязвимости kernel-lt

ALT-PU-2021-3554: package `kernel-image-un-def` update to version 5.15.10-alt1

Security update for the Linux Kernel

ALT-PU-2021-4943: package `kernel-image-std-kvm` update to version 5.10.85-alt1

ALT-PU-2021-3618: package `kernel-image-rt` update to version 5.10.87-alt1.rt59

Security update for the Linux Kernel

ALT-PU-2021-4935: package `kernel-image-mp` update to version 5.15.8-alt1

ALT-PU-2022-7822: package `kernel-image-xenomai` update to version 4.19.229-alt1.cip67.21

ALT-PU-2022-1016: package `kernel-image-rpi-un` update to version 5.15.13-alt1

ALT-PU-2022-1015: package `kernel-image-rpi-un` update to version 5.15.13-alt1

ALT-PU-2021-3660: package `kernel-image-un-def` update to version 5.15.11-alt2

Security update for the Linux Kernel

ALT-PU-2022-1428: package `kernel-image-rt` update to version 5.10.100-alt1.rt62