vulnerability

Ubuntu: (Multiple Advisories) (CVE-2020-25669): Linux kernel vulnerabilities

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Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Nov 23, 2020
Added
Jan 29, 2021
Modified
Mar 22, 2023

Description

A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.

Solution(s)

ubuntu-upgrade-linux-image-4-15-0-1012-dell300xubuntu-upgrade-linux-image-4-15-0-1065-oracleubuntu-upgrade-linux-image-4-15-0-1079-gkeubuntu-upgrade-linux-image-4-15-0-1079-raspi2ubuntu-upgrade-linux-image-4-15-0-1085-kvmubuntu-upgrade-linux-image-4-15-0-1093-gcpubuntu-upgrade-linux-image-4-15-0-1094-awsubuntu-upgrade-linux-image-4-15-0-1096-snapdragonubuntu-upgrade-linux-image-4-15-0-1108-azureubuntu-upgrade-linux-image-4-15-0-136-genericubuntu-upgrade-linux-image-4-15-0-136-generic-lpaeubuntu-upgrade-linux-image-4-15-0-136-lowlatencyubuntu-upgrade-linux-image-4-4-0-1085-awsubuntu-upgrade-linux-image-4-4-0-1087-kvmubuntu-upgrade-linux-image-4-4-0-1121-awsubuntu-upgrade-linux-image-4-4-0-1145-raspi2ubuntu-upgrade-linux-image-4-4-0-1149-snapdragonubuntu-upgrade-linux-image-4-4-0-201-genericubuntu-upgrade-linux-image-4-4-0-201-generic-lpaeubuntu-upgrade-linux-image-4-4-0-201-lowlatencyubuntu-upgrade-linux-image-4-4-0-201-powerpc-e500mcubuntu-upgrade-linux-image-4-4-0-201-powerpc-smpubuntu-upgrade-linux-image-4-4-0-201-powerpc64-embubuntu-upgrade-linux-image-4-4-0-201-powerpc64-smpubuntu-upgrade-linux-image-5-4-0-1010-gkeopubuntu-upgrade-linux-image-5-4-0-1029-raspiubuntu-upgrade-linux-image-5-4-0-1033-kvmubuntu-upgrade-linux-image-5-4-0-1036-gkeubuntu-upgrade-linux-image-5-4-0-1037-gcpubuntu-upgrade-linux-image-5-4-0-1038-awsubuntu-upgrade-linux-image-5-4-0-1038-oracleubuntu-upgrade-linux-image-5-4-0-1040-azureubuntu-upgrade-linux-image-5-4-0-66-genericubuntu-upgrade-linux-image-5-4-0-66-generic-lpaeubuntu-upgrade-linux-image-5-4-0-66-lowlatencyubuntu-upgrade-linux-image-5-6-0-1053-oemubuntu-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-dell300xubuntu-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-gkeopubuntu-upgrade-linux-image-gkeop-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

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