On Mon, Jul 04, 2022 at 02:26:19PM +0300, Dan Carpenter wrote: > > On Fri, Jul 01, 2022 at 06:08:29AM -0700, Soumya Negi wrote: > > #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git > > 3f8a27f9e27bd78604c0709224cec0ec85a8b106 > > > > -- > > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/CAHH-VXdqp0ZGKyJWE76zdyKwhv104JRA8ujUY5NoYO47HC9XWQ%40mail.gmail.com. > > > From 3aa5aaffef64a5574cbdb3f5c985bc25b612140c Mon Sep 17 00:00:00 2001 > > From: Soumya Negi <soumya.negi97@xxxxxxxxx> > > Date: Fri, 1 Jul 2022 04:52:17 -0700 > > Subject: [PATCH] isdn: capi: Add check for controller count in > > detach_capi_ctr() > > > > Fixes Syzbot bug: > > https://syzkaller.appspot.com/bug?id=14f4820fbd379105a71fdee357b0759b90587a4e > > > > This patch checks whether any ISDN devices are registered before unregistering > > a CAPI controller(device). Without the check, the controller struct capi_str > > results in out-of-bounds access bugs to other CAPI data strucures in > > detach_capri_ctr() as seen in the bug report. > > > > This bug was already fixed by commit 1f3e2e97c003 ("isdn: cpai: check > ctr->cnr to avoid array index out of bound"). > > It just needs to be backported. Unfortunately there was no Fixes tag so > it wasn't picked up. Also I'm not sure how backports work in netdev. That commit has already been backported quite a while ago and is in the following releases: 4.4.290 4.9.288 4.14.253 4.19.214 5.4.156 5.10.76 5.14.15 5.15 thanks, greg k-h
