lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Sun, 23 Aug 2020 20:58:33 +0530
From:   Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, xie.he.0141@...il.com
Cc:     andrianov <andrianov@...ras.ru>, netdev <netdev@...r.kernel.org>
Subject: Regarding possible bug in net/wan/x25_asy.c

Hello,

I have the following doubt:

sl->xhead is modified in both x25_asy_change_mtu() and
x25_asy_write_wakeup(). However, sl->lock is not held in
x25_asy_write_wakeup(). So, I am not sure if it is indeed possible to
have a race between these two functions. If it is possible that these
two functions can execute in parallel then the lock should be held in
x25_asy_write_wakeup() as well. Please let me know if this race is
possible.

Thanks and regards,
Madhuparna

Powered by blists - more mailing lists