The directory does not contain the patch version.

    [BEE] fetching https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37.3/util-linux-2.37.3.tar.xz
    --2022-01-25 09:16:07--  https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37.3/util-linux-2.37.3.tar.xz
    Resolving mirrors.edge.kernel.org... 147.75.101.1, 2604:1380:2001:3900::1
    Connecting to mirrors.edge.kernel.org|147.75.101.1|:443... connected.
    HTTP request sent, awaiting response... 404 Not Found
    2022-01-25 09:16:08 ERROR 404: Not Found.

So only use the major and minor version.

1.  https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.34/v2.34-ReleaseNotes
2.  https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.35/v2.35-ReleaseNotes
3.  https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.36/v2.36-ReleaseNotes
4.  https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37-ReleaseNotes

From [util-linux 2.37.3 Release Notes][1]:

> This release fixes two security mount(8) and umount(8) issues:
>
> CVE-2021-3996
>     Improper UID check in libmount allows an unprivileged user to unmount FUSE
>     filesystems of users with similar UID.
>
> CVE-2021-3995
>     This issue is related to parsing the /proc/self/mountinfo file allows an
>     unprivileged user to unmount other user's filesystems that are either
>     world-writable themselves or mounted in a world-writable directory.

[1]: https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes