This issue could be reproduced with following command. More easily to be reproduced with narrow terminal (such as 40 characters width)
wget http://old-releases.ubuntu.com/releases/16.04.0/ubuntu-16.04 -desktop-amd64.iso This issue has been fixed by the following commit http://git.savannah.gnu.org/cgit/wget.git/commit/?id=7099f4899880eaefc2c40a3dc7693ab4174a819b >From 7099f4899880eaefc2c40a3dc7693ab4174a819b Mon Sep 17 00:00:00 2001 From: Darshit Shah <dar...@gmail.com> Date: Mon, 22 Feb 2016 15:08:15 +0100 Subject: [PATCH] Sanitize value sent to memset to prevent SEGFAULT --- src/progress.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/progress.c b/src/progress.c index 93f6246..8a5df21 100644 --- a/src/progress.c +++ b/src/progress.c @@ -1164,6 +1164,8 @@ create_image (struct bar_progress *bp, double dl_total_time, bool done) } padding = bp->width - count_cols (bp->buffer); + assert (padding > 0 && "Padding length became non-positive!"); + padding = padding > 0 ? padding : 0; memset (p, ' ', padding); p += padding; *p = '\0'; @@ -1174,6 +1176,9 @@ create_image (struct bar_progress *bp, double dl_total_time, bool done) * from the release code since we do not want Wget to crash and burn when the * assertion fails. Instead Wget should continue downloading and display a * horrible and irritating progress bar that spams the screen with newlines. + * + * By default, all assertions are disabled in a Wget build and are enabled + * only with the --enable-assert configure option. */ assert (count_cols (bp->buffer) == bp->width); } -- 2.7.4 ** Patch added: "wget_1.17.1-1ubuntu1.2.debdiff" https://bugs.launchpad.net/ubuntu/+source/wget/+bug/1573307/+attachment/4825717/+files/wget_1.17.1-1ubuntu1.2.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1573307 Title: wget crashed with SIGSEGV in __memset_avx2() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/wget/+bug/1573307/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
