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VULNERABILITIES

CVE-2026-100081 Details

Description

In the Linux kernel, the following vulnerability has been resolved: xen-netback: defer xenvif_mcast_addr_list_free() In order for the function to legitimately avoid locking/RCU, it needs to run after all TX/RX processing has finished/stopped: Lookups happen from xenvif_start_xmit(), while adds/removes happen from xenvif_tx_action() (called out of xenvif_poll()). Move the call out of xenvif_disconnect_data() (the call to the function from connect()'s error path doesn't require any cleaning up there), and put it past the synchronization point in backend_disconnect(). This is XSA-527 / CVE-2026-100081.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/0d515c409033c8e2a645a781be3ca76ab825fc8c kernel.org
https://git.kernel.org/stable/c/0e786123e46d08d2247ce93a5435e45ed9f4c5d1 kernel.org
https://git.kernel.org/stable/c/34f0f63dc6dc11895a17bb5672451b6b11622c99 kernel.org
https://git.kernel.org/stable/c/96e05a8ce243e2207704e2e7a6e7d1172730f515 kernel.org
https://git.kernel.org/stable/c/990d123d9eaa3ac6c979eed245658676d65ce0db kernel.org

see all 9 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-2026-100081
NVD Published Date:
Nov 6, 2026
NVD Last Modified:
Nov 6, 2026
Source:
kernel.org
CVE-2026-100081 Details - Not Deferred