CVE-2021-47520

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Source
https://cve.org/CVERecord?id=CVE-2021-47520
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47520.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-47520
Downstream
CLSA (2)
DEBIAN (1)
OESA (1)
SUSE (12)
UBUNTU (1)
Related
SUSE (12)
Published
2024-05-24T15:15:14Z
Modified
2026-03-15T22:00:21Z
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, the following vulnerability has been resolved:

can: pch_can: pch_can_rx_normal: fix use after free

After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb).

Reordering the lines solves the issue.

References

Affected packages

Git /

Affected ranges

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47520.json"
unresolved_ranges 
[
    {
        "events":  [
            {
                "introduced":  "2.6.37"
            },
            {
                "fixed":  "4.4.295"
            }
        ]
    },
    {
        "events":  [
            {
                "introduced":  "4.5"
            },
            {
                "fixed":  "4.9.293"
            }
        ]
    },
    {
        "events":  [
            {
                "introduced":  "4.10"
            },
            {
                "fixed":  "4.14.258"
            }
        ]
    },
    {
        "events":  [
            {
                "introduced":  "4.15"
            },
            {
                "fixed":  "4.19.221"
            }
        ]
    },
    {
        "events":  [
            {
                "introduced":  "4.20"
            },
            {
                "fixed":  "5.4.165"
            }
        ]
    },
    {
        "events":  [
            {
                "introduced":  "5.5"
            },
            {
                "fixed":  "5.10.85"
            }
        ]
    },
    {
        "events":  [
            {
                "introduced":  "5.11"
            },
            {
                "fixed":  "5.15.8"
            }
        ]
    }
]