Описание
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 1:2.11+dfsg-1ubuntu7.37 |
| devel | released | 1:6.0+dfsg-2expubuntu1 |
| esm-infra-legacy/trusty | needed | |
| esm-infra/bionic | not-affected | 1:2.11+dfsg-1ubuntu7.37 |
| esm-infra/focal | not-affected | 1:4.2-3ubuntu6.17 |
| esm-infra/xenial | needed | |
| focal | released | 1:4.2-3ubuntu6.17 |
| groovy | released | 1:5.0-5ubuntu9.9 |
| hirsute | released | 1:5.2+dfsg-9ubuntu3.1 |
| impish | released | 1:6.0+dfsg-2expubuntu1 |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | DNE | |
| devel | DNE | |
| esm-infra-legacy/trusty | DNE | |
| esm-infra/focal | DNE | |
| focal | DNE | |
| groovy | DNE | |
| hirsute | DNE | |
| impish | DNE | |
| jammy | DNE | |
| kinetic | DNE |
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Ссылки на источники
EPSS
2.1 Low
CVSS2
5.5 Medium
CVSS3
Связанные уязвимости
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
A flaw was found in the USB redirector device (usb-redir) of QEMU. Sma ...
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
EPSS
2.1 Low
CVSS2
5.5 Medium
CVSS3