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-next>] [day] [month] [year] [list]
Message-ID: <CAMEuxRrg0nSroVGXwaCM1579Ddb822mY0hkSX5_Kcz1YqF_9sg@mail.gmail.com>
Date:   Fri, 2 Sep 2022 23:25:31 -0700
From:   Li Zhong <floridsleeves@...il.com>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:     Greg KH <gregkh@...uxfoundation.org>, rafael@...nel.org
Subject: [PATCH v1] drivers/base/auxiliary: check return value of strrchr()

From: Li Zhong <floridsleeves@...il.com>

The return value of strrchr() could be NULL, which will cause invalid
offset in (int)(p - name). So we check it here.

Signed-off-by: Li Zhong <floridsleeves@...il.com>
---
 drivers/base/auxiliary.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c
index 8c5e65930617..7ac23be47e1f 100644
--- a/drivers/base/auxiliary.c
+++ b/drivers/base/auxiliary.c
@@ -191,7 +191,8 @@ static int auxiliary_uevent(struct device *dev,
struct kobj_uevent_env *env)

  name = dev_name(dev);
  p = strrchr(name, '.');
-
+ if (!p)
+ return -EINVAL;
  return add_uevent_var(env, "MODALIAS=%s%.*s", AUXILIARY_MODULE_PREFIX,
        (int)(p - name), name);
 }
-- 
2.25.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ