CVE-2021-31440
- Source
- https://cve.org/CVERecord?id=CVE-2021-31440
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-31440.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-31440
- Aliases
-
- A-189614572
- PUB-A-189614572
- Downstream
- Related
- Published
- 2021-05-21T15:15:07.750Z
- Modified
- 2026-03-20T11:40:46.863065Z
- Severity
-
- 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-13661.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed10bf4e83167cc68595b85fd73bb91e8f2c086e36
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed10bf4e83167cc68595b85fd73bb91e8f2c086e36
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "5.7"
},
{
"fixed": "5.10.37"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.11.21"
}
]
},
{
"events": [
{
"introduced": "5.12"
},
{
"fixed": "5.12.4"
}
]
}
]
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-31440.json"