CVE-2021-3489
- Source
- https://cve.org/CVERecord?id=CVE-2021-3489
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3489.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3489
- Aliases
-
- A-190877279
- PUB-A-190877279
- Downstream
- Related
- Published
- 2021-06-04T02:15:07.047Z
- Modified
- 2026-03-10T23:37:25.911996Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
The eBPF RINGBUF bpfringbufreserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee ("bpf, ringbuf: Deny reserve of buffers larger than ringbuf") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it") (v5.8-rc1).
- References
-
- https://security.netapp.com/advisory/ntap-20210716-0004/
- https://ubuntu.com/security/notices/USN-4949-1
- https://ubuntu.com/security/notices/USN-4950-1
- https://www.openwall.com/lists/oss-security/2021/05/11/10
- https://www.zerodayinitiative.com/advisories/ZDI-21-590/
- https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=4b81ccebaeee885ab1aa1438133f2991e3a2b6ea
Affected packages
Git /
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "5.8"
},
{
"fixed": "5.10.37"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.11.21"
}
]
},
{
"events": [
{
"introduced": "5.12"
},
{
"fixed": "5.12.4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.13-NA"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.13-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.13-rc2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.13-rc3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "20.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "20.10"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "21.04"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3489.json"