CVE-2026-98572
Received
Received - Intake
BPF JMP Immediate Fix on MIPS32 Linux Kernel
Vulnerability report for CVE-2026-98572, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-18
Last updated on: 2026-10-18
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix immediate JMP JEQ/JNE on MIPS32
An addu instruction was emitted instead of addiu, causing the immediate
value 1 to be interpreted as register $at. This made the comparison
result invalid when the immediate operand was negative. Note that $at
is mapped to BPF_REG_AX, which is used for constant blinding.
Fix the instruction to use the immediate form.
Found with test_bpf on MIPS32r1 emulated by QEMU.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | eb63cfcd2ee8ec3805f6881f43341f589c3d2278 |
| Linux | Linux | eb63cfcd2ee8ec3805f6881f43341f589c3d2278 |
| Linux | Linux | eb63cfcd2ee8ec3805f6881f43341f589c3d2278 |
| Linux | Linux | eb63cfcd2ee8ec3805f6881f43341f589c3d2278 |
| Linux | Linux | eb63cfcd2ee8ec3805f6881f43341f589c3d2278 |
| Linux | Linux | eb63cfcd2ee8ec3805f6881f43341f589c3d2278 |
| Linux | Linux | 5.16 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
