An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
---|---|---|
![]() |
DLA-2557-1 | linux-4.19 security update |
![]() |
DLA-2586-1 | linux security update |
![]() |
DSA-4843-1 | linux security update |
![]() |
EUVD-2020-21930 | An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable. |
![]() |
USN-4748-1 | Linux kernel vulnerabilities |
![]() |
USN-4749-1 | Linux kernel vulnerabilities |
![]() |
USN-4750-1 | Linux kernel vulnerabilities |
![]() |
USN-4751-1 | Linux kernel vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.

Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-04T16:55:10.345Z
Reserved: 2020-12-04T00:00:00
Link: CVE-2020-29568

No data.

Status : Modified
Published: 2020-12-15T17:15:14.660
Modified: 2024-11-21T05:24:13.270
Link: CVE-2020-29568

No data.

No data.