Bug 1716990 (CVE-2019-12455) - CVE-2019-12455 kernel: null pointer dereference in sunxi_divs_clk_setup in drivers/clk/sunxi/clk-sunxi.c causing denial of service
Summary: CVE-2019-12455 kernel: null pointer dereference in sunxi_divs_clk_setup in dr...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-12455
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1717003
Blocks: 1717002
TreeView+ depends on / blocked
 
Reported: 2019-06-04 13:55 UTC by Dhananjay Arunesh
Modified: 2020-02-20 16:29 UTC (History)
43 users (show)

Fixed In Version:
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Last Closed: 2020-02-20 16:29:26 UTC


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Description Dhananjay Arunesh 2019-06-04 13:55:51 UTC
An issue was discovered in sunxi_divs_clk_setup in drivers/clk/sunxi/clk-sunxi.c
in the Linux kernel through 5.1.5. There is an unchecked kstrndup of
derived_name, which might allow an attacker to cause a denial of service (NULL
pointer dereference and system crash).

Reference:
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2010240.html

Upstream commit:
https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/commit/?h=sunxi/clk-for-5.3&id=fcdf445ff42f036d22178b49cf64e92d527c1330

Comment 1 Dhananjay Arunesh 2019-06-04 14:10:16 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1717003]


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