linux-kernel - [PATCH AUTOSEL for 4.9 265/281] scsi: libsas: fix memory leak in sas_smp_get_phy

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

Message-ID: <20180319155742.13731-265-alexander.levin@microsoft.com>
Date:   Mon, 19 Mar 2018 16:03:08 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Jason Yan <yanaijie@...wei.com>,
        John Garry <john.garry@...wei.com>,
        chenqilin <chenqilin2@...wei.com>,
        chenxiang <chenxiang66@...ilicon.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 265/281] scsi: libsas: fix memory leak in
 sas_smp_get_phy_events()

From: Jason Yan <yanaijie@...wei.com>

[ Upstream commit 4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 ]

We've got a memory leak with the following producer:

while true;
do cat /sys/class/sas_phy/phy-1:0:12/invalid_dword_count >/dev/null;
done

The buffer req is allocated and not freed after we return. Fix it.

Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver")
Signed-off-by: Jason Yan <yanaijie@...wei.com>
CC: John Garry <john.garry@...wei.com>
CC: chenqilin <chenqilin2@...wei.com>
CC: chenxiang <chenxiang66@...ilicon.com>
Reviewed-by: Christoph Hellwig <hch@....de>
Reviewed-by: Hannes Reinecke <hare@...e.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/scsi/libsas/sas_expander.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 022bb6e10d98..76730a5637ca 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -684,6 +684,7 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
 	phy->phy_reset_problem_count = scsi_to_u32(&resp[24]);
 
  out:
+	kfree(req);
 	kfree(resp);
 	return res;
 
-- 
2.14.1