CVE-2026-98243 Linux Kernel - Use After Free

Linux kernel contains a use after free vulnerability caused by improper checking of signaling bit and ops pointer in dma-buf/dma-fence, letting attackers potentially cause memory corruption, exploit requires kernel-level access.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the latest Linux kernel version containing the dma-buf/dma-fence patch v3 or later.

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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