Описание
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service or gain privileges by leveraging the erroneous enabling of interrupts. Interrupts are unconditionally unmasked in exception handlers. When an exception occurs on an ARM system which is handled without changing processor level, some interrupts are unconditionally enabled during exception entry. So exceptions which occur when interrupts are masked will effectively unmask the interrupts. A malicious guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needed |
| devel | not-affected | 4.11.3+24-g14b62ab3e5-1ubuntu1 |
| disco | ignored | end of life |
| eoan | ignored | end of life |
| esm-apps/focal | not-affected | 4.11.3+24-g14b62ab3e5-1ubuntu1 |
| esm-apps/jammy | not-affected | 4.11.3+24-g14b62ab3e5-1ubuntu1 |
| esm-apps/noble | not-affected | 4.11.3+24-g14b62ab3e5-1ubuntu1 |
| esm-infra-legacy/trusty | DNE | |
| esm-infra/bionic | needed | |
| esm-infra/xenial | needed |
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EPSS
8.5 High
CVSS2
8.8 High
CVSS3
Связанные уязвимости
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service or gain privileges by leveraging the erroneous enabling of interrupts. Interrupts are unconditionally unmasked in exception handlers. When an exception occurs on an ARM system which is handled without changing processor level, some interrupts are unconditionally enabled during exception entry. So exceptions which occur when interrupts are masked will effectively unmask the interrupts. A malicious guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified.
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service or gain privileges by leveraging the erroneous enabling of interrupts. Interrupts are unconditionally unmasked in exception handlers. When an exception occurs on an ARM system which is handled without changing processor level, some interrupts are unconditionally enabled during exception entry. So exceptions which occur when interrupts are masked will effectively unmask the interrupts. A malicious guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified.
An issue was discovered in Xen through 4.12.x allowing ARM guest OS us ...
An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service or gain privileges by leveraging the erroneous enabling of interrupts. Interrupts are unconditionally unmasked in exception handlers. When an exception occurs on an ARM system which is handled without changing processor level, some interrupts are unconditionally enabled during exception entry. So exceptions which occur when interrupts are masked will effectively unmask the interrupts. A malicious guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified.
Уязвимость гипервизора Xen, связанная с неправильным присвоением разрешений для критичного ресурса, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании
EPSS
8.5 High
CVSS2
8.8 High
CVSS3