CVE-2022-50007
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-06-18

Last updated on: 2025-11-14

Assigner: kernel.org

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.
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Meta Information
Published
2025-06-18
Last Modified
2025-11-14
Generated
2026-05-06
AI Q&A
2025-06-18
EPSS Evaluated
2026-05-05
NVD
CVE-2022-50007
Affected Vendors & Products
Showing 15 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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CWE ID Description
CWE-NVD-CWE-Other
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a reference count leak in the Linux kernel's xfrm subsystem, specifically in the __xfrm_policy_check() function. When an error occurs while fetching the second policy object (pols[1]), the function returns without decrementing the reference count of the first policy object (pols[0]), which was previously incremented. This leads to a memory leak because the reference count is not properly managed.


How can this vulnerability impact me? :

The vulnerability can cause memory leaks in the Linux kernel, which over time may lead to increased memory usage and potentially degrade system performance or stability. However, it does not directly cause code execution or privilege escalation.


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