CVE-2026-31589 - Vulnerability Analysis

Overview

Linux kernel contains a use-after-free vulnerability caused by improper handling of folio_unmap_invalidate() leading to access of freed mapping->a_ops, letting attackers cause memory corruption, exploit requires kernel code execution.

Severity & Score

Impact

Attackers can cause memory corruption or kernel crashes, potentially leading to privilege escalation or denial of service.

Mitigation

Update to the latest Linux kernel version containing the fix.

References

• https://git.kernel.org/stable/c/b667df39d98a7a24be7c2a40ff0863dac1ad2cd7
• https://git.kernel.org/stable/c/c330e65ea59c4805d6ab6757c4ddfe8c63acef31
• https://git.kernel.org/stable/c/615d9bb2ccad42f9e21d837431e401db2e471195

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner