CVE-2021-20239
3.3
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Exploitability: 1.8 / Impact: 1.4
Source: NVD
Description
A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.
Affected (5)
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Before 5.4.92 |
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| Version 5.0 |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| Version 33 |
Related CWEs
CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-822
Untrusted Pointer Dereference
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
References (2)
Source: secalert@redhat.com
Issue TrackingThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingThird Party Advisory
Timeline
No history available yet.