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VULNERABILITIES

CVE-2026-98251 Details

Description

In the Linux kernel, the following vulnerability has been resolved: openvswitch: avoid reallocating confirmed conntrack labels ovs_ct_get_conn_labels() adds the labels extension when a conntrack entry does not have one. Confirmed conntracks can be read locklessly, so adding an extension may reallocate and free the extension block while another CPU accesses it. Only add the extension for unconfirmed conntracks. A confirmed conntrack without labels now fails the caller's label operation instead of reallocating its extension storage.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/05eab8dced6bf4d3009a6eeee16ddac99047dc83 kernel.org
https://git.kernel.org/stable/c/2e6dd889c325abf23821e1459c3ffef59b7f0009 kernel.org
https://git.kernel.org/stable/c/3f118c8217c109fd13ca61caa301d72c483897ef kernel.org
https://git.kernel.org/stable/c/4371d79ea74407fb992c985b1f94391e35bb8289 kernel.org
https://git.kernel.org/stable/c/579d87ec1e1e85729a6cb2c25961e58beb78640c kernel.org

see all 8 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-98251
NVD Published Date:
Oct 6, 2026
NVD Last Modified:
Oct 7, 2026
Source:
kernel.org