Описание
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
| Релиз | Статус | Примечание |
|---|---|---|
| artful | ignored | end of life |
| bionic | released | 4.9.2-0ubuntu1 |
| cosmic | not-affected | 4.9.2-0ubuntu1 |
| devel | not-affected | 4.9.2-0ubuntu1 |
| disco | not-affected | 4.9.2-0ubuntu1 |
| eoan | not-affected | 4.9.2-0ubuntu1 |
| esm-apps/focal | not-affected | 4.9.2-0ubuntu1 |
| esm-apps/jammy | not-affected | 4.9.2-0ubuntu1 |
| esm-apps/noble | not-affected | 4.9.2-0ubuntu1 |
| esm-infra-legacy/trusty | DNE | trusty/esm was DNE [trusty was needs-triage] |
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EPSS
9 Critical
CVSS2
9.1 Critical
CVSS3
Связанные уязвимости
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
An issue was discovered in Xen through 4.9.x. Grant copying code made ...
An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.
Уязвимость гипервизора Xen, связаная с ошибками в процедуре копирования разрешений, позволяющая нарушителю вызвать отказ в обслуживании, повысить свои привилегии или раскрыть защищаемую инфоррмацию
EPSS
9 Critical
CVSS2
9.1 Critical
CVSS3