CVE-2018-12633

An issue was discovered in the Linux kernel through 4.17.2. vbgmiscdeviceioctl in drivers/virt/vboxguest/vboxguestlinux.c reads the same user data twice with copyfromuser. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables...

Race condition

An issue was discovered in the Linux kernel through 4.17.2. vbgmiscdeviceioctl in drivers/virt/vboxguest/vboxguestlinux.c reads the same user data twice with copyfromuser. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables...

CVE-2018-12633

An issue was discovered in the Linux kernel through 4.17.2. vbgmiscdeviceioctl in drivers/virt/vboxguest/vboxguestlinux.c reads the same user data twice with copyfromuser. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables...

CVE-2018-12633

An issue was discovered in the Linux kernel through 4.17.2. vbgmiscdeviceioctl in drivers/virt/vboxguest/vboxguestlinux.c reads the same user data twice with copyfromuser. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables...

CVE-2018-12633

An issue was discovered in the Linux kernel through 4.17.2. vbgmiscdeviceioctl in drivers/virt/vboxguest/vboxguestlinux.c reads the same user data twice with copyfromuser. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables...

CVE-2018-12633

An issue was discovered in the Linux kernel through 4.17.2. vbgmiscdeviceioctl in drivers/virt/vboxguest/vboxguestlinux.c reads the same user data twice with copyfromuser. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables...

CVE-2018-12633

CVE-2018-12633 affects the Linux kernel up to 4.17.2, where vbg_misc_device_ioctl() in drivers/virt/vboxguest/vboxguest_linux.c double-fetches header data from user input via copy_from_user. A race condition lets a local attacker tamper with hdr.size_in and hdr.size_out between fetches, enabling ...