CVE-2026-43403 - Vulnerability Analysis

Overview

Linux kernel contains a broken access control vulnerability caused by insufficient permission checks in ns iteration ioctls, letting privileged services potentially leak information across namespaces, exploit requires privileged service access.

Severity & Score

Impact

Privileged services can leak information across namespaces, risking sensitive data exposure between isolated services.

Mitigation

Update to the latest Linux kernel version with tightened permission checks for ns iteration ioctls.

References

• https://git.kernel.org/stable/c/3376b345df155ca36d8611857b41ff7d5183fc38
• https://git.kernel.org/stable/c/e6b899f08066e744f89df16ceb782e06868bd148
• https://git.kernel.org/stable/c/0ad650e60150eda789deca5e78a6a09d26bf8fc9
• https://git.kernel.org/stable/c/2f3dea284c761c890d676f77d5e55c0c496b4ef4

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner