CVE-2026-98359 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability in RDMA core due to ib_get_eth_speed invoking ethtool callback on unregistering net_device, letting attackers cause denial of service, exploit requires asynchronous RDMA port query.

CVSS base score 7.0 /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
Denial Of Service
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

Vendor fix

Update to the latest Linux kernel version containing the fix for this issue.

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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