CVE-2020-8835

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Source
https://cve.org/CVERecord?id=CVE-2020-8835
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-8835.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-8835
Downstream
Related
Published
2020-04-02T18:15:18.943Z
Modified
2026-03-18T11:42:15.082819Z
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

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)

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
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f2d67fec0b43edce8c416101cdc52e71145b5fef
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f2d67fec0b43edce8c416101cdc52e71145b5fef

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-8835.json"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "5.4.7"
            },
            {
                "fixed": "5.4.29"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.5.0"
            },
            {
                "fixed": "5.5.14"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.6"
            },
            {
                "fixed": "5.6.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "30"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "31"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "32"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "18.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "19.10"
            }
        ]
    }
]