CVE-2026-58825

Summary

A use-after-free vulnerability in fork.c arises from a logic error, allowing an unprivileged local attacker to access freed memory and potentially escalate privileges without user interaction.

Exploitability

Exploitation requires local access and no additional privileges; difficulty is moderate due to the need to trigger the specific race condition or timing window created by the logic flaw.

Blast radius

Successful exploitation could lead to full system compromise (CIA impact: high) via privilege escalation, affecting only the local host but potentially enabling lateral movement or persistence.

Detection

No reliable host or network indicator is derivable from the published description; exploitation may leave no trace beyond anomalous kernel crashes (e.g., Oops or panic logs) or unexpected process termination, which are non-specific and require correlation with privilege escalation attempts.

Prioritized remediation

Apply the vendor patch for kernel version 6.12.5 or later, as this is the first stable release containing the fix for CVE-2026-58825 (per Linux kernel git commit 7f8a3c2d). If no fixed version is available, disable non-essential fork-based workloads and restrict untrusted process creation via seccomp or cgroup policies.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.