On 2023-07-13, Willy Tarreau <w@xxxxxx> wrote: > +Cc Thomas Weißschuh <thomas@xxxxxxxx> as this seems quite related to > his finding about /proc/self/net: > > https://lore.kernel.org/lkml/20230624-proc-net-setattr-v1-0-73176812adee@xxxxxxxxxxxxxx/#b Yeah I saw this patch and (along with an earlier discussion with Christian on the topic of chmod on symlinks -- see [1]) lead us to find that there were three other cases where this happens unintentionally: * /proc/self (on the symlink itself) * /proc/thread-self (on the symlink itself) * /proc/thread-self/comm The first two will be fixed by [1] so fixing them isn't necessary. [1]: https://lore.kernel.org/linux-fsdevel/20230712-vfs-chmod-symlinks-v2-1-08cfb92b61dd@xxxxxxxxxx/ -- Aleksa Sarai Senior Software Engineer (Containers) SUSE Linux GmbH <https://www.cyphar.com/>
