CVE-2026-90358
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-90358, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-17
Last updated on: 2026-09-18
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf, x86: Fix trampoline stack size for 128-bit arguments
btf_distill_func_proto() accepts a function argument up to 16 bytes, so a
128-bit scalar such as __int128 reaches the x86 trampoline with
arg_size == 16. But the current implementation assumes an __int128
argument only needs one register, so the register save area is
under-allocated and save_args() overwrites adjacent stack slots.
Compute the register count from arg_size for all arguments to fix it.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 |
| Linux | Linux | a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 |
| Linux | Linux | a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 |
| Linux | Linux | a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 |
| Linux | Linux | 6.1 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
