PT-2026-27698 · Linux · Linux Kernel
Published
2026-01-01
·
Updated
2026-04-20
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CVE-2026-23333
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw in the netfilter module related to the validation of open intervals within nft set rbtree. Specifically, the issue arises from the lack of a defined end element for open intervals, making overlap validation challenging. The vulnerability can occur when adding or deleting intervals, potentially leading to incorrect behavior. The patch introduces a flag within the
nft set elem structure to identify the last element in an add/delete command, enabling more accurate overlap checks. The issue can manifest when adding intervals that overlap with existing start elements, or when deleting open intervals and subsequently adding new elements.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linux Kernel