Race Condition in Linux Kernel's IPv6 Functionality
CVE-2026-23004

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 25 January 2026

What is CVE-2026-23004?

A race condition vulnerability was identified in the Linux kernel, particularly within the IPv6 routing functions. This defect can lead to unexpected behavior, including kernel crashes upon attempting to modify internal lists without proper locking mechanisms. The failure occurs during list management in functions such as rt6_uncached_list_flush_dev() and rt6_uncached_list_del(), where concurrent access may result in use-after-free scenarios. Proper mitigation involves ensuring that appropriate locks are utilized when accessing and modifying data structures related to cached lists.

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