CVE-2021-29266

2021-03-2600:00:00

ubuntu.com

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.0004 Low

EPSS

Percentile

11.7%

JSON

An issue was discovered in the Linux kernel before 5.11.9.
drivers/vhost/vdpa.c has a use-after-free because v->config_ctx has an
invalid value upon re-opening a character device, aka CID-f6bbf0010ba0.

Notes

Author	Note
sbeattie	likely requires write access to /dev/virtio-vdpa-* devices

OSVersionArchitecturePackageVersionFilename
ubuntu20.10noarchlinux< 5.8.0-53.60UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1033.35UNKNOWN
ubuntu20.10noarchlinux-azure< 5.8.0-1032.34UNKNOWN
ubuntu22.04noarchlinux-azure-fde< anyUNKNOWN
ubuntu20.10noarchlinux-gcp< 5.8.0-1031.32UNKNOWN
ubuntu22.04noarchlinux-gkeop< anyUNKNOWN
ubuntu20.04noarchlinux-gkeop-5.15< anyUNKNOWN
ubuntu20.04noarchlinux-hwe-5.8< 5.8.0-53.60~20.04.1UNKNOWN
ubuntu20.10noarchlinux-kvm< 5.8.0-1027.29UNKNOWN
ubuntu20.04noarchlinux-oem-5.10< 5.10.0-1025.26UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.10	noarch	linux	< 5.8.0-53.60	UNKNOWN
ubuntu	20.10	noarch	linux-aws	< 5.8.0-1033.35	UNKNOWN
ubuntu	20.10	noarch	linux-azure	< 5.8.0-1032.34	UNKNOWN
ubuntu	22.04	noarch	linux-azure-fde	< any	UNKNOWN
ubuntu	20.10	noarch	linux-gcp	< 5.8.0-1031.32	UNKNOWN
ubuntu	22.04	noarch	linux-gkeop	< any	UNKNOWN
ubuntu	20.04	noarch	linux-gkeop-5.15	< any	UNKNOWN
ubuntu	20.04	noarch	linux-hwe-5.8	< 5.8.0-53.60~20.04.1	UNKNOWN
ubuntu	20.10	noarch	linux-kvm	< 5.8.0-1027.29	UNKNOWN
ubuntu	20.04	noarch	linux-oem-5.10	< 5.10.0-1025.26	UNKNOWN