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
| ||
|
Date: Tue, 7 Apr 2015 19:11:41 +0300 From: Giedrius Statkevičius <giedrius.statkevicius@...il.com> To: lidza.louina@...il.com, markh@...pro.net Cc: gregkh@...uxfoundation.org, driverdev-devel@...uxdriverproject.org, devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org, dan.carpenter@...cle.com, sudipm.mukherjee@...il.com, Giedrius Statkevičius <giedrius.statkevicius@...il.com> Subject: [PATCH v4 2/3] staging: dgnc: don't forget to check if ->channels[i] is NULL in dgnc_tty_uninit() Add a check if ->channels[i] is NULL because a NULL pointer may be dereferenced in case one of the allocations failed Reported-by: Dan Carpenter <dan.carpenter@...cle.com> Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@...il.com> --- v4: new patch that fixes a bug reported by Dan Carpenter drivers/staging/dgnc/dgnc_tty.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c index 0e48f95..785eb6c 100644 --- a/drivers/staging/dgnc/dgnc_tty.c +++ b/drivers/staging/dgnc/dgnc_tty.c @@ -403,7 +403,9 @@ void dgnc_tty_uninit(struct dgnc_board *brd) dgnc_BoardsByMajor[brd->SerialDriver.major] = NULL; brd->dgnc_Serial_Major = 0; for (i = 0; i < brd->nasync; i++) { - dgnc_remove_tty_sysfs(brd->channels[i]->ch_tun.un_sysfs); + if (brd->channels[i]) + dgnc_remove_tty_sysfs(brd->channels[i]-> + ch_tun.un_sysfs); tty_unregister_device(&brd->SerialDriver, i); } tty_unregister_driver(&brd->SerialDriver); @@ -414,7 +416,9 @@ void dgnc_tty_uninit(struct dgnc_board *brd) dgnc_BoardsByMajor[brd->PrintDriver.major] = NULL; brd->dgnc_TransparentPrint_Major = 0; for (i = 0; i < brd->nasync; i++) { - dgnc_remove_tty_sysfs(brd->channels[i]->ch_pun.un_sysfs); + if (brd->channels[i]) + dgnc_remove_tty_sysfs(brd->channels[i]-> + ch_pun.un_sysfs); tty_unregister_device(&brd->PrintDriver, i); } tty_unregister_driver(&brd->PrintDriver); -- 2.3.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists