Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition, the copy routine did not hold the appropriate locks while reading knote state, allowing further races. An unprivileged local user can trigger a use-after-free in the kernel, potentially leading to privilege escalation.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
CVE-2026-58083 While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete… https://www.cve.org/CVERecord?id=CVE-2026-58083
Post summary
The snippet offers a concise technical description of a kernel race condition but contains no PoC, exploit, active use, or patch information.
4 of 4 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | freebsd | freebsd | 15.1 | - | - |
| OS | freebsd | freebsd | 15.1 | - | - |
| OS | freebsd | freebsd | 15.1 | - | - |
| OS | freebsd | freebsd | 15.1 | - | - |