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ubuntucveUbuntu.comUB:CVE-2021-28688
HistoryApr 06, 2021 - 12:00 a.m.

CVE-2021-28688

2021-04-0600:00:00
ubuntu.com
ubuntu.com
20

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

11.7%

JSON

The fix for XSA-365 includes initialization of pointers such that
subsequent cleanup code wouldn’t use uninitialized or stale values. This
initialization went too far and may under certain conditions also overwrite
pointers which are in need of cleaning up. The lack of cleanup would result
in leaking persistent grants. The leak in turn would prevent fully cleaning
up after a respective guest has died, leaving around zombie domains. All
Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365
was classified to affect versions back to at least 3.11.

OSVersionArchitecturePackageVersionFilename
ubuntu16.04noarchlinux< 4.4.0-222.255) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux< 4.15.0-143.147UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-74.83UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-55.62UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1102.109UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1035.37UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1102.107) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1138.152) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1049.51UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1049.51~18.04.1UNKNOWN
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nessus 48
openvas 39
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photon 6
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amazon 2
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debian 2
slackware 1
cve
cve
CVE-2021-28688
2021-04-06 19:15:00
nessus
nessus
SUSE SLES12 Security Update : kernel (Live Patch 43 for SLE 12 SP3) (SUSE-SU-2022:1003-1)
2022-03-30 00:00:00
SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1341-1)
2021-04-29 00:00:00
SUSE SLES12 Security Update : kernel (Live Patch 41 for SLE 12 SP3) (SUSE-SU-2021:4052-1)
2021-12-15 00:00:00
openvas
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SUSE: Security Advisory (SUSE-SU-2022:1003-1)
2022-03-30 00:00:00
SUSE: Security Advisory (SUSE-SU-2021:1341-1)
2021-06-09 00:00:00
SUSE: Security Advisory (SUSE-SU-2021:4052-1)
2021-12-15 00:00:00
debiancve
debiancve
CVE-2021-28688
2021-04-06 19:15:00
prion
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Design/Logic Flaw
2021-04-06 19:15:00
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Linux: blkback driver may leak persistent grants
2021-03-30 11:03:00
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Citrix Hypervisor Security Update
2021-03-30 10:17:36
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Important Photon OS Security Update - PHSA-2021-0382
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2021-04-01 00:00:00
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2021-05-20 00:00:00
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Updated kernel-linus packages fix security vulnerabilities
2021-04-03 16:16:06
Updated kernel packages fix security vulnerabilities
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2021-06-01 00:00:00
Unbreakable Enterprise kernel-container security update
2021-05-10 00:00:00
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osv
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2021-05-11 21:53:16
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
2021-06-08 02:05:13
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2021-06-08 02:12:28
ubuntu
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Linux kernel vulnerabilities
2021-05-11 00:00:00
Linux kernel vulnerabilities
2021-06-08 00:00:00
Linux kernel vulnerabilities
2021-06-08 00:00:00
cloudfoundry
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USN-4982-1: Linux kernel vulnerabilities | Cloud Foundry
2021-06-11 00:00:00
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amazon
amazon
Low: kernel
2021-05-20 21:12:00
Important: kernel
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suse
suse
Security update for the Linux Kernel (important)
2021-04-10 00:00:00
Security update for the Linux Kernel (important)
2021-05-22 00:00:00
Security update for the Linux Kernel (important)
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debian
debian
[SECURITY] [DLA 2690-1] linux-4.19 security update
2021-06-23 00:05:06
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2021-06-23 00:11:57
slackware
slackware
[slackware-security] Slackware 14.2 kernel
2021-07-21 05:44:30

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

11.7%

JSON
Related for UB:CVE-2021-28688
cve1nessus48openvas39debiancve1prion1xen1citrix1photon6mageia2oraclelinux5osv7ubuntu5cloudfoundry2amazon2suse4debian2slackware1