Overview
- Description
- In MidnightBSD before 1.2.6 and 1.3 before August 2020, and FreeBSD before 7, a NULL pointer dereference was found in the Linux emulation layer that allows attackers to crash the running kernel. During binary interaction, td->td_emuldata in sys/compat/linux/linux_emul.h is not getting initialized and returns NULL from em_find().
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.5
- Impact score
- 3.6
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4.9
- Impact score
- 6.9
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
- nvd@nist.gov
- CWE-476
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:midnightbsd:midnightbsd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "049DCCEC-50B8-4E70-886F-E5FC3C0E0248",
"versionEndExcluding": "1.2.6"
},
{
"criteria": "cpe:2.3:a:midnightbsd:midnightbsd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "45E97C30-01B2-49EC-992D-6FED17D48BFB",
"versionEndIncluding": "2020-08-19",
"versionStartIncluding": "1.3"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "14AAC833-24C9-43C0-A81F-FA9F2CB1B1C9",
"versionEndIncluding": "7.0"
}
],
"operator": "OR"
}
]
}
]