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CVE-2026-49415 is a local privilege-escalation vulnerability in FreeBSD's execve(2) handling for SUID binaries. During execution of a SUID program, the kernel installs the new virtual address space before updating the process credentials. This creates a time-of-check/time-of-use race window in which the kernel's debugging permission check still evaluates the process under its original credentials. A second process running as the same user can use procfs or linprocfs access to inspect and modify the target process memory during that window. By altering the address space of the SUID binary before the credential transition completes, an unprivileged local attacker can subvert the privileged program's execution flow and escalate privileges.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A FreeBSD execve-related local privilege escalation vulnerability affecting SUID root program handling under specific procfs/linprocfs conditions.
A local privilege escalation vulnerability in FreeBSD's execve handling that may permit elevation via SUID root binaries in specific procfs/linprocfs scenarios.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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