Поиск уязвимостей

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.

Since Linux kernel version 3.2, the mremap() syscall performs TLB flus ...

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

Уязвимость механизма проверки BPF ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии

Security update for the Linux Kernel

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.

Уязвимость в реализации системного вызова mremap() ядра операционной системы Linux, позволяющая нарушителю получить доступ к физической странице

ALT-PU-2018-2586: package `kernel-image-un-def` update to version 4.18.16-alt1

ALT-PU-2018-2524: package `kernel-image-std-def` update to version 4.14.78-alt1

ELSA-2019-0512: kernel security, bug fix, and enhancement update (IMPORTANT)

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

ELSA-2020-5706: Unbreakable Enterprise kernel security update (IMPORTANT)

Security update for the Linux RT Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel