CVE-2026-90358 Linux Kernel - Memory Corruption

Linux kernel contains a buffer overflow caused by under-allocated register save area for 128-bit arguments in BPF x86 trampoline, letting attackers cause memory corruption, exploit requires local code execution.

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
Memory Corruption
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for BPF x86 trampoline stack size.

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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