linux-ext4 - Re: [PATCH] e2fsck: fix precedence bug in built-in quota support

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 linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Tue, 22 May 2012 10:20:35 -0700
From:	Aditya Kali <adityakali@...gle.com>
To:	"Theodore Ts'o" <tytso@....edu>
Cc:	Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] e2fsck: fix precedence bug in built-in quota support

Oops. Thanks for the patch.


On Mon, May 21, 2012 at 7:09 PM, Theodore Ts'o <tytso@....edu> wrote:
> The operator precedence bug means that we might pay atteion to
> s_grp_quota_inum even if the RO_COMPAT_QUOTA feature flag is clear.
> However, fortunately, this is unlikely to happen in practice.
>
> Cc: Aditya Kali <adityakali@...gle.com>
> Signed-off-by: "Theodore Ts'o" <tytso@....edu>
Reviewed-by: Aditya Kali <adityakali@...gle.com>
> ---
>  e2fsck/pass1.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
> index c7645d1..c6aae6e 100644
> --- a/e2fsck/pass1.c
> +++ b/e2fsck/pass1.c
> @@ -928,8 +928,8 @@ void e2fsck_pass1(e2fsck_t ctx)
>                        ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
>                        if ((fs->super->s_feature_ro_compat &
>                                        EXT4_FEATURE_RO_COMPAT_QUOTA) &&
> -                           (fs->super->s_usr_quota_inum == ino) ||
> -                           (fs->super->s_grp_quota_inum == ino)) {
> +                           ((fs->super->s_usr_quota_inum == ino) ||
> +                            (fs->super->s_grp_quota_inum == ino))) {
>                                if (!LINUX_S_ISREG(inode->i_mode) &&
>                                    fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
>                                                        &pctx)) {
> --
> 1.7.10.rc3
>



-- 

Aditya