CVE-2026-31518

MediumCVSS 5.5/10Last modified Oct 15, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

esp: fix skb leak with espintcp and async crypto

When the TX queue for espintcp is full, esp_output_tail_tcp will return an error and not free the skb, because with synchronous crypto, the common xfrm output code will drop the packet for us.

With async crypto (esp_output_done), we need to drop the skb when esp_output_tail_tcp returns an error.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

No affected versions have been published.

Timeline

Published
Apr 22, 2026
Last modified
Oct 15, 2026
NVD status
Modified

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CVE-2026-31518: Medium severity, CVSS 5.5 | Vulnix