Описание
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
Ссылки
- Mailing ListThird Party Advisory
- PatchThird Party Advisory
- Mailing ListPatchVendor Advisory
- PatchThird Party Advisory
- Third Party Advisory
- Mailing ListThird Party Advisory
- PatchThird Party Advisory
- Mailing ListPatchVendor Advisory
- PatchThird Party Advisory
- Third Party Advisory
Уязвимые конфигурации
Одно из
EPSS
7.8 High
CVSS3
4.6 Medium
CVSS2
Дефекты
Связанные уязвимости
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used ...
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
Уязвимость функции tss_invalidate_io_bitmap ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии
EPSS
7.8 High
CVSS3
4.6 Medium
CVSS2