Skip to main content
cve.nowby Sazabi
← All vulnerabilities
CVE-2026-98251

openvswitch: avoid reallocating confirmed conntrack labels

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 4371d79ea74407fb992c985b1f94391e35bb8289; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 7ff688aceada1160331a789385ea146f62fbddf7; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 05eab8dced6bf4d3009a6eeee16ddac99047dc83; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 579d87ec1e1e85729a6cb2c25961e58beb78640c; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 2e6dd889c325abf23821e1459c3ffef59b7f0009; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in d16f089bd700f45d720ce989d5495e1dc3be0cf8; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 8c9fcc6c33950d3db551af664d1fd3d998bfee56; From c2ac667358708d7cce64c78f58af6adf4c1e848b · fixed in 3f118c8217c109fd13ca61caa301d72c483897ef

  • Linux Linux

    4.3

  • KernelLinux

    From 4.3.0 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.54; From 6.19.0 · fixed in 7.2.8

References 8

git.kernel.org