CVE-2026-81001 Linux Kernel slip - Use After Free

Linux kernel slip driver contains a use-after-free vulnerability caused by race conditions in slip_devs[] handling during device teardown and synchronization, letting local attackers cause memory corruption, exploit requires concurrent slip device open/close operations.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.16% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for slip use-after-free in sl_sync().

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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