CVE-2026-56906 Linux Kernel - Use After Free

Linux kernel contains a use-after-free caused by a race condition in ep_free of eventpoll.c, letting local attackers escalate privileges, exploit requires no additional execution privileges or user interaction.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.05% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-362

Vendor fix

Update to the latest Linux kernel version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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