Bug 2426162 (CVE-2023-54273)

Summary: CVE-2023-54273 kernel: Linux kernel: Denial of Service due to xfrm resource leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a resource leak vulnerability within the xfrm subsystem. This occurs because a network device (netdev) reference tracker is incorrectly released during direction checks. Successful exploitation can lead to a Denial of Service (DoS) due to the exhaustion of system resources.
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Description OSIDB Bzimport 2025-12-30 13:13:18 UTC
In the Linux kernel, the following vulnerability has been resolved:

xfrm: Fix leak of dev tracker

At the stage of direction checks, the netdev reference tracker is
already initialized, but released with wrong *_put() call.