CVE-2022-50007

xfrm: fix refcount leak in __xfrm_policy_check()

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in __xfrm_policy_check() The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks. Fix it by decreasing the reference count of `pols[0]` in that path.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/18e6b6e2555c93f5ca09f2b85ef1fa025c8accea
https://git.kernel.org/stable/c/8f94b933103ee1bda119543369cc18a1be5536db
https://git.kernel.org/stable/c/0769491a8acd3e85ca4c3f65080eac2c824262df
https://git.kernel.org/stable/c/63da7a2bbf3f28094920e0b8a17d2571a9bd842d
https://git.kernel.org/stable/c/1305d7d4f35ca6f214a2d23b075aa6a924cff3be
https://git.kernel.org/stable/c/26ad2398fe4984f4f6f930bcb3bc9047fa77265b
https://git.kernel.org/stable/c/d66c052879791313f90c0584420f196a038fb8b8
https://git.kernel.org/stable/c/9c9cb23e00ddf45679b21b4dacc11d1ae7961ebe

Frequently Asked Questions

What is the severity of CVE-2022-50007?: CVE-2022-50007 has not yet been assigned a CVSS score.
How to fix CVE-2022-50007?: To fix CVE-2022-50007, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-50007 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-50007 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-50007?: CVE-2022-50007 affects Linux Linux, Linux Linux.

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