Описание
In the Linux kernel, the following vulnerability has been resolved:
RDMA/hfi1: Fix use-after-free bug for mm struct
Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
In the Linux kernel, the following vulnerability has been resolved:
RDMA/hfi1: Fix use-after-free bug for mm struct
Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2022-49076
- https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023
- https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c
- https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c
- https://git.kernel.org/stable/c/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7
- https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Fix use-after-free bug for mm struct Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Fix use-after-free bug for mm struct Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Fix use-after-free bug for mm struct Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
In the Linux kernel, the following vulnerability has been resolved: R ...
Уязвимость функции hfi1_mmu_rb_unregister() модуля drivers/infiniband/hw/hfi1/mmu_rb.c - драйвера поддержки InfiniBand ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации