vulnerability
Arch Linux: Denial of service (CVE-2021-4095)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:M/Au:N/C:N/I:N/A:P) | Mar 8, 2022 | Jul 11, 2025 | Feb 10, 2026 |
Severity
2
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:P)
Published
Mar 8, 2022
Added
Jul 11, 2025
Modified
Feb 10, 2026
Description
A security issue has been found in the Linux kernel. There is a NULL pointer dereference in kvm_dirty_ring_get() in virt/kvm/dirty_ring.c via a KVM KVM_XEN_HVM_SET_ATTR ioctl when there is no vCPU created.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-4095
- https://attackerkb.com/topics/CVE-2021-4095
- URL-http://www.openwall.com/lists/oss-security/2022/01/17/1
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=2031194
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QIOQN7JJNN6ABIDGRSTVZA65MHRLMH2Q/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT6573CGKVK3DU2632VVO5BVM4IU7SBV/
- CWE-476
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