vulnerability
Ubuntu: (Multiple Advisories) (CVE-2020-27675): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:N/I:N/A:C) | Oct 22, 2020 | Jan 6, 2021 | Mar 22, 2023 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
Oct 22, 2020
Added
Jan 6, 2021
Modified
Mar 22, 2023
Description
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5.
Solution(s)
ubuntu-upgrade-linux-image-4-15-0-1062-oracleubuntu-upgrade-linux-image-4-15-0-1077-gkeubuntu-upgrade-linux-image-4-15-0-1077-raspi2ubuntu-upgrade-linux-image-4-15-0-1082-kvmubuntu-upgrade-linux-image-4-15-0-1091-awsubuntu-upgrade-linux-image-4-15-0-1091-gcpubuntu-upgrade-linux-image-4-15-0-1094-snapdragonubuntu-upgrade-linux-image-4-15-0-1103-azureubuntu-upgrade-linux-image-4-15-0-129-genericubuntu-upgrade-linux-image-4-15-0-129-generic-lpaeubuntu-upgrade-linux-image-4-15-0-129-lowlatencyubuntu-upgrade-linux-image-4-4-0-1083-awsubuntu-upgrade-linux-image-4-4-0-1085-kvmubuntu-upgrade-linux-image-4-4-0-1119-awsubuntu-upgrade-linux-image-4-4-0-1143-raspi2ubuntu-upgrade-linux-image-4-4-0-1147-snapdragonubuntu-upgrade-linux-image-4-4-0-198-genericubuntu-upgrade-linux-image-4-4-0-198-generic-lpaeubuntu-upgrade-linux-image-4-4-0-198-lowlatencyubuntu-upgrade-linux-image-4-4-0-198-powerpc-e500mcubuntu-upgrade-linux-image-4-4-0-198-powerpc-smpubuntu-upgrade-linux-image-4-4-0-198-powerpc64-embubuntu-upgrade-linux-image-4-4-0-198-powerpc64-smpubuntu-upgrade-linux-image-5-4-0-1026-raspiubuntu-upgrade-linux-image-5-4-0-1031-kvmubuntu-upgrade-linux-image-5-4-0-1033-gcpubuntu-upgrade-linux-image-5-4-0-1033-gkeubuntu-upgrade-linux-image-5-4-0-1034-awsubuntu-upgrade-linux-image-5-4-0-1034-oracleubuntu-upgrade-linux-image-5-4-0-1035-azureubuntu-upgrade-linux-image-5-4-0-59-genericubuntu-upgrade-linux-image-5-4-0-59-generic-lpaeubuntu-upgrade-linux-image-5-4-0-59-lowlatencyubuntu-upgrade-linux-image-5-8-0-1016-raspiubuntu-upgrade-linux-image-5-8-0-1016-raspi-nolpaeubuntu-upgrade-linux-image-5-8-0-1019-kvmubuntu-upgrade-linux-image-5-8-0-1021-oracleubuntu-upgrade-linux-image-5-8-0-1023-azureubuntu-upgrade-linux-image-5-8-0-1023-gcpubuntu-upgrade-linux-image-5-8-0-1024-awsubuntu-upgrade-linux-image-5-8-0-44-genericubuntu-upgrade-linux-image-5-8-0-44-generic-64kubuntu-upgrade-linux-image-5-8-0-44-generic-lpaeubuntu-upgrade-linux-image-5-8-0-44-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-16-04ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-generic-lpae-lts-xenialubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-4-15ubuntu-upgrade-linux-image-gke-5-4ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-18-04ubuntu-upgrade-linux-image-powerpc-e500mcubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenialubuntu-upgrade-linux-image-powerpc-smpubuntu-upgrade-linux-image-powerpc-smp-lts-xenialubuntu-upgrade-linux-image-powerpc64-embubuntu-upgrade-linux-image-powerpc64-emb-lts-xenialubuntu-upgrade-linux-image-powerpc64-smpubuntu-upgrade-linux-image-powerpc64-smp-lts-xenialubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragonubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-16-04ubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-hwe-20-04ubuntu-upgrade-linux-image-virtual-lts-xenial
References
- CVE-2020-27675
- https://attackerkb.com/topics/CVE-2020-27675
- NVD-CVE-2020-27675
- UBUNTU-USN-4679-1
- UBUNTU-USN-4680-1
- UBUNTU-USN-4681-1
- UBUNTU-USN-4683-1
- UBUNTU-USN-4708-1
- UBUNTU-USN-4709-1
- UBUNTU-USN-4710-1
- UBUNTU-USN-4711-1
- UBUNTU-USN-4748-1
- UBUNTU-USN-4749-1
- UBUNTU-USN-4750-1
- UBUNTU-USN-4751-1
- UBUNTU-USN-4752-1
- UBUNTU-USN-4876-1
- UBUNTU-USN-4912-1
- UBUNTU-USN-5130-1
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.