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The xfrm_add_acquire() function constructs an xfrm policy by calling
xfrm_policy_construct(). This allocates the policy structure and
potentially associates a security context and a device policy with it.
However, at the end of the function, the policy object is freed using
only kfree() . This skips the necessary cleanup for the security context
and device policy, leading to a memory leak.
To fix this, invoke the proper cleanup functions xfrm_dev_policy_delete(),
xfrm_dev_policy_free(), and security_xfrm_policy_free() before freeing the
policy object. This approach mirrors the error handling path in
xfrm_add_policy(), ensuring that all associated resources are correctly
released.
Fixes: 980ebd2579 ("[IPSEC]: Sync series - acquire insert")
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.