CVE-2020-8835
7.8
HIGH
CVSS 3.1
EPSS 6.1%
Description
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)
How to fix CVE-2020-8835
To remediate CVE-2020-8835, upgrade the affected package to a fixed version below.
- —upgrade to 5.5.13-2 or later
Is CVE-2020-8835 being exploited?
Moderate — EPSS is 6.1%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 5.5.13-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |