---
id: CVE-2026-68295
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  LoongArch: BPF: Zero-extend signed ALU32 div/mod results

  ALU32 operations write a 32-bit result and leave the upper 32 bits of
  the BPF register zero
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  LoongArch: BPF: Zero-extend signed ALU32 div/mod results

  ALU32 operations write a 32-bit result and leave the upper 32 bits of
  the BPF register zero. The LoongArch JIT…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 2425c9e002d2a1fdca34261b2fa6713eafef2163 <
    16656c3d734693be3d8a36dbf9d09142b69f3ddc
  - >-
    Linux >= 2425c9e002d2a1fdca34261b2fa6713eafef2163 <
    716cb29dbed4d62e9e108950a1a82bcba4cc2d45
  - >-
    Linux >= 2425c9e002d2a1fdca34261b2fa6713eafef2163 <
    dacd348b8a993373576fe2ee2d8b114740ba57a6
  - Linux 6.7
published: '2026-08-10'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:40.700'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68295'
references:
  - url: 'https://git.kernel.org/stable/c/16656c3d734693be3d8a36dbf9d09142b69f3ddc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/716cb29dbed4d62e9e108950a1a82bcba4cc2d45'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dacd348b8a993373576fe2ee2d8b114740ba57a6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00165
epssPercentile: 0.05322
ingestedAt: '2026-10-15T11:00:41.691Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

LoongArch: BPF: Zero-extend signed ALU32 div/mod results

ALU32 operations write a 32-bit result and leave the upper 32 bits of
the BPF register zero. The LoongArch JIT sign-extends the result of
signed ALU32 BPF_DIV and BPF_MOD (off=1), so a negative 32-bit quotient
or remainder leaves bits 63:32 set in JITted code while the verifier
and interpreter model those bits as zero.

Keep sign-extension on the operands, which signed divide needs, and
zero-extend the ALU32 result after the divide or modulo instruction,
matching the unsigned ALU32 div/mod paths and every other ALU32
operation in this JIT.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.