linux-kernel - [PATCH AUTOSEL 5.4 316/459] drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res

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: <20200214160149.11681-316-sashal@kernel.org>
Date:   Fri, 14 Feb 2020 10:59:26 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Navid Emamdoost <navid.emamdoost@...il.com>,
        Thomas Hellstrom <thellstrom@...are.com>,
        Sasha Levin <sashal@...nel.org>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.4 316/459] drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add

From: Navid Emamdoost <navid.emamdoost@...il.com>

[ Upstream commit 40efb09a7f53125719e49864da008495e39aaa1e ]

In vmw_cmdbuf_res_add if drm_ht_insert_item fails the allocated memory
for cres should be released.

Fixes: 18e4a4669c50 ("drm/vmwgfx: Fix compat shader namespace")
Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
Reviewed-by: Thomas Hellstrom <thellstrom@...are.com>
Signed-off-by: Thomas Hellstrom <thellstrom@...are.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
index 4ac55fc2bf970..44d858ce4ce7f 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c
@@ -209,8 +209,10 @@ int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
 
 	cres->hash.key = user_key | (res_type << 24);
 	ret = drm_ht_insert_item(&man->resources, &cres->hash);
-	if (unlikely(ret != 0))
+	if (unlikely(ret != 0)) {
+		kfree(cres);
 		goto out_invalid_key;
+	}
 
 	cres->state = VMW_CMDBUF_RES_ADD;
 	cres->res = vmw_resource_reference(res);
-- 
2.20.1