CVE-2021-46952

Fix shift out-of-bounds in xprtcalcmajortimeo(). This is caused by a garbage timeout (retrans) mount option being passed to nfs mount, in this case from syzkaller.

If the protocol is XPRTTRANSPORTUDP, then 'retrans' is a shift value for a 64-bit long integer, so 'retrans' cannot be >= 64. If it is >= 64, fail the mount and return an error.

References

Affected packages

Git /

Affected ranges

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46952.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "5.6.0"
            },
            {
                "fixed": "5.10.36"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.11.0"
            },
            {
                "fixed": "5.11.20"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.12.0"
            },
            {
                "fixed": "5.12.3"
            }
        ]
    }
]