Description
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Published: 2026-11-02
Score: 4.1 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Tue, 03 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: fork: release the files of a failed fork after sched_cancel_fork() Reorder copy_process() cleanup so sched_fork() taking scx_fork_rwsem scx_pre_fork() is safe and isn't held around exiting files. Right now, a fork that fails while another thread closed the bpf link fd will deadlock against its own read side. It also blocks every fork on the system: copy_process() holds scx_fork_rwsem for read exit_files() close_files() filp_close_sync() bpf_scx_unreg() kthread_flush_work() waits for the disable work scx_root_disable() percpu_down_write(&scx_fork_rwsem) Simply release the child's files after sched_cancel_fork() dropped the lock. The task starts out as a copy of its parent so p->files points to the parent's table until copy_files() replaces it. exit_files() must not run for a fork that failed before that. Clear p->files up front so exit_files() is a no-op for those and make copy_files() set it explicitly for CLONE_FILES. This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Title fork: release the files of a failed fork after sched_cancel_fork() kernel: kernel: Denial of Service via deadlock during failed process creation
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Tue, 03 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362

Tue, 03 Nov 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-833
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Mon, 02 Nov 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux linux
Weaknesses CWE-362
Vendors & Products Linux linux

Mon, 02 Nov 2026 16:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: fork: release the files of a failed fork after sched_cancel_fork() Reorder copy_process() cleanup so sched_fork() taking scx_fork_rwsem scx_pre_fork() is safe and isn't held around exiting files. Right now, a fork that fails while another thread closed the bpf link fd will deadlock against its own read side. It also blocks every fork on the system: copy_process() holds scx_fork_rwsem for read exit_files() close_files() filp_close_sync() bpf_scx_unreg() kthread_flush_work() waits for the disable work scx_root_disable() percpu_down_write(&scx_fork_rwsem) Simply release the child's files after sched_cancel_fork() dropped the lock. The task starts out as a copy of its parent so p->files points to the parent's table until copy_files() replaces it. exit_files() must not run for a fork that failed before that. Clear p->files up front so exit_files() is a no-op for those and make copy_files() set it explicitly for CLONE_FILES.
Title fork: release the files of a failed fork after sched_cancel_fork()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Linux Kernel
cve-icon MITRE

Status: REJECTED

Assigner: Linux

Published:

Updated: 2026-11-03T19:15:16.756Z

Reserved: 2026-09-25T10:25:14.401Z

Link: CVE-2026-99217

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-02T16:17:45.570

Modified: 2026-11-02T16:17:45.570

Link: CVE-2026-99217

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-02T16:06:30Z

Links: CVE-2026-99217 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses