CVE-2025-38097

Advisory lineage Upstream: 0 Downstream: 40
Analyzed
Published: 03 Jul 2025, 08:13
Last modified:11 May 2026, 21:21

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.09% LOW
0% probability +0.06%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Jul 2025, 08:13
Published
Vulnerability first disclosed
11 May 2026, 21:21
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: espintcp: remove encap socket caching to avoid reference leak The current scheme for caching the encap socket can lead to reference leaks when we try to delete the netns. The reference chain is: xfrm_state -> enacp_sk -> netns Since the encap socket is a userspace socket, it holds a reference on the netns. If we delete the espintcp state (through flush or individual delete) before removing the netns, the reference on the socket is dropped and the netns is correctly deleted. Otherwise, the netns may not be reachable anymore (if all processes within the ns have terminated), so we cannot delete the xfrm state to drop its reference on the socket. This patch results in a small (~2% in my tests) performance regression. A GC-type mechanism could be added for the socket cache, to clear references if the state hasn't been used "recently", but it's a lot more complex than just not caching the socket.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.09%• Percentile: 25%

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < e4cde54b46a87231c77256a633be1bef62687d69 | ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < b58a295d10065960bcb9d60cb8ca6ead9837cd27 | ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 9cbca30102028f9ad3d2098f935c4368f581fd07 | ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 74fd327767fb784c5875cf7c4ba1217f26020943 | ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 028363685bd0b7a19b4a820f82dd905b1dc83999 | 5.6

  • linux•linux_kernel

    ≥ 5.6, < 6.1.141 | ≥ 6.2, < 6.6.93 | ≥ 6.7, < 6.12.31 | ≥ 6.13, < 6.14.9 | 6.15:rc1 | 6.15:rc2 | 6.15:rc3 | 6.15:rc4 | 6.15:rc5 | 6.15:rc6 | 6.15:rc7

References (6)