Описание
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
Ссылки
- PatchThird Party Advisory
- Third Party AdvisoryVDB Entry
- PatchThird Party Advisory
- Third Party Advisory
- PatchThird Party Advisory
- PatchThird Party Advisory
- Third Party AdvisoryVDB Entry
- PatchThird Party Advisory
- Third Party Advisory
- PatchThird Party Advisory
Уязвимые конфигурации
EPSS
5.9 Medium
CVSS3
7.1 High
CVSS2
Дефекты
Связанные уязвимости
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
In net/socket.c in the Linux kernel through 4.17.1, there is a race co ...
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
Security update for the Linux Kernel (Live Patch 1 for SLE 15)
EPSS
5.9 Medium
CVSS3
7.1 High
CVSS2