UBUNTU-CVE-2025-4382

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Source
https://ubuntu.com/security/CVE-2025-4382
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-4382.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-4382
Related
Published
2025-05-09T12:15:00Z
Modified
2025-06-03T17:58:42Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in systems utilizing LUKS-encrypted disks with GRUB configured for TPM-based auto-decryption. When GRUB is set to automatically decrypt disks using keys stored in the TPM, it reads the decryption key into system memory. If an attacker with physical access can corrupt the underlying filesystem superblock, GRUB will fail to locate a valid filesystem and enter rescue mode. At this point, the disk is already decrypted, and the decryption key remains loaded in system memory. This scenario may allow an attacker with physical access to access the unencrypted data without any further authentication, thereby compromising data confidentiality. Furthermore, the ability to force this state through filesystem corruption also presents a data integrity concern.

References

Affected packages

Ubuntu:Pro:14.04:LTS / grub2

Package

Name
grub2
Purl
pkg:deb/ubuntu/grub2@2.02~beta2-9ubuntu1.21?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.00-19ubuntu2
2.00-19ubuntu3
2.00-19ubuntu4
2.00-20
2.00-21
2.00-22
2.02~beta2-5
2.02~beta2-6
2.02~beta2-7
2.02~beta2-8
2.02~beta2-9
2.02~beta2-9ubuntu1
2.02~beta2-9ubuntu1.1
2.02~beta2-9ubuntu1.2
2.02~beta2-9ubuntu1.3
2.02~beta2-9ubuntu1.4
2.02~beta2-9ubuntu1.5
2.02~beta2-9ubuntu1.6
2.02~beta2-9ubuntu1.7
2.02~beta2-9ubuntu1.8
2.02~beta2-9ubuntu1.11
2.02~beta2-9ubuntu1.12
2.02~beta2-9ubuntu1.14
2.02~beta2-9ubuntu1.15
2.02~beta2-9ubuntu1.16
2.02~beta2-9ubuntu1.17
2.02~beta2-9ubuntu1.20
2.02~beta2-9ubuntu1.21

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:14.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.34.24?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.22
1.23
1.24
1.25
1.26
1.27
1.30
1.31
1.32
1.33
1.34
1.34.1
1.34.2
1.34.3
1.34.4
1.34.5
1.34.6
1.34.7
1.34.8
1.34.9
1.34.13
1.34.14
1.34.16
1.34.17
1.34.18
1.34.20
1.34.22
1.34.24

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:16.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.167~16.04.6?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.55
1.56
1.57
1.58
1.59
1.61
1.62
1.63
1.64
1.65
1.66
1.66.1
1.66.2
1.66.6
1.66.7
1.66.8
1.66.9
1.66.11
1.66.12
1.66.14
1.66.15
1.66.16
1.66.17
1.66.18
1.66.19
1.66.20
1.66.21
1.66.22
1.66.23
1.66.26
1.66.27
1.66.28
1.66.29
1.167~16.04.1
1.167~16.04.2
1.167~16.04.4
1.167~16.04.6

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:16.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.04-1ubuntu44.1.2?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.04-1ubuntu44
2.04-1ubuntu44.1
2.04-1ubuntu44.1.2

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.187.3~18.04.1?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.85
1.86
1.87
1.89
1.91
1.92
1.93
1.93.1
1.93.2
1.93.3
1.93.4
1.93.5
1.93.7
1.93.8
1.93.10
1.93.11
1.93.13
1.93.14
1.93.15
1.93.16
1.93.18
1.93.19
1.93.20
1.93.21
1.93.22
1.93.24
1.167~18.04.1
1.167~18.04.3
1.167~18.04.5
1.173.2~18.04.1
1.187.2~18.04.1
1.187.3~18.04.1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.1?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.04-1ubuntu44
2.04-1ubuntu44.1
2.04-1ubuntu44.1.2
2.04-1ubuntu47.4
2.06-2ubuntu14
2.06-2ubuntu14.1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:20.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.187.12~20.04?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.128
1.129
1.130
1.131
1.133
1.134
1.135
1.136
1.137
1.138
1.139
1.140
1.141
1.142
1.142.1
1.142.3
1.142.4
1.142.5
1.142.6
1.142.8
1.142.9
1.142.10
1.142.11
1.167
1.167.2
1.173.2~20.04.1
1.173.4
1.187.2~20.04.2
1.187.3~20.04.1
1.187.4~20.04.1
1.187.6~20.04.1
1.187.12~20.04

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:20.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.8?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.04-1ubuntu44
2.04-1ubuntu44.2
2.04-1ubuntu47.4
2.04-1ubuntu47.5
2.06-2ubuntu14
2.06-2ubuntu14.1
2.06-2ubuntu14.2
2.06-2ubuntu14.4
2.06-2ubuntu14.8

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.187.12?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.173
1.174
1.176
1.177
1.178
1.179
1.180
1.182~22.04.1
1.187.2
1.187.3~22.04.1
1.187.4~22.04.1
1.187.6
1.187.12

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.06-2ubuntu14.8?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.04-1ubuntu47
2.04-1ubuntu48
2.06-2ubuntu3
2.06-2ubuntu4
2.06-2ubuntu5
2.06-2ubuntu6
2.06-2ubuntu7
2.06-2ubuntu10
2.06-2ubuntu14
2.06-2ubuntu14.1
2.06-2ubuntu14.2
2.06-2ubuntu14.4
2.06-2ubuntu14.8

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.209.4?arch=source&distro=oracular

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.202
1.204
1.208
1.209
1.209.1
1.209.4

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.12-5ubuntu5.3?arch=source&distro=oracular

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.12-1ubuntu7
2.12-1ubuntu9
2.12-5ubuntu4
2.12-5ubuntu5
2.12-5ubuntu5.1
2.12-5ubuntu5.3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.202.5?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.197
1.199
1.201
1.202
1.202.2
1.202.5

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.12-1ubuntu7.3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.12~rc1-10ubuntu4
2.12~rc1-12ubuntu2
2.12-1ubuntu1
2.12-1ubuntu7
2.12-1ubuntu7.1
2.12-1ubuntu7.3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:25.04 / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed@1.212?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.209
1.209.1
1.211
1.212

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:25.04 / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned@2.12-5ubuntu11?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.12-5ubuntu5
2.12-5ubuntu5.1
2.12-5ubuntu9
2.12-5ubuntu11

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}