CVE-2026-58942

Summary

A use-after-free vulnerability in the do_fault_around function in memory.c allows local attackers to escalate privileges due to a logic error that frees memory while still referencing it, without requiring user interaction or additional privileges.

Exploitability

Exploitation requires local access and is non-trivial due to the need to precisely trigger the use-after-free condition, but no user interaction or elevated privileges are required.

Blast radius

Successful exploitation could allow a local attacker to gain full system control, compromising confidentiality, integrity, and availability of the affected system.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Apply the vendor patch for kernel version X.Y.Z (if specified); if no fixed version is published, disable memory mapping features involving fault handling or restrict access to the affected subsystem until a patch is available.

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