CVE-2026-89707Medium· 6.5▾ SunlitA flaw was found in the Linux kernel's nfsd component. An authenticated Network File System (NFS) client can exploit this vulnerability by triggering a failed cross-mount operation through `nfsd_lookup_dentry` or the NFSv4 READDIR encode p…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 5.3
none → medium
— → 7.5
none → high
7.5 → 5.3
high → medium
5.3 → 7.5
medium → high
7.5 → 7
0.2% → 0.6%
7 → 7.5
Last analysed / modified upstream
7.5 → 6.5
high → medium
A flaw was found in the Linux kernel's nfsd component. An authenticated Network File System (NFS) client can exploit this vulnerability by triggering a failed cross-mount operation through nfsd_lookup_dentry or the NFSv4 READDIR encode path. This leads to a reference count leak, which inflates mnt_count and d_count, blocking unmounting operations and pinning directory entries against the shrinker. This can result in a Denial of Service (DoS) condition.
kernel: nfsd: release path refs on follow_down() error — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-21.
Affected:
No fix planned:
Out of support scope
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2025-40171Medium· 5.5kernel: Kernel: Denial of Service in nvmet-fc due to resource leak (CVE-2025-40171)
CVE-2025-39776Medium· 5.5kernel: mm/debug_vm_pgtable: clear page table entries at destroy_args() (CVE-2025-39776)
CVE-2023-54220High· 7.8In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Fix oops for port->pm on uart_change_pm() Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual …
CVE-2022-50750High· 7.8In the Linux kernel, the following vulnerability has been resolved: drm/panel/panel-sitronix-st7701: Remove panel on DSI attach failure In case mipi_dsi_attach() fails, call drm_panel_remove() to avoid memory leak.
CVE-2026-74699Medium· 5.5In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix memory leak in exec_queue_set_hang_replay_state() The q->replay_state is blindly overwritten, which can potentially leak memory that was previously allocat…
CVE-2026-74680Medium· 5.5In the Linux kernel, the following vulnerability has been resolved: usb: atm: cxacru: properly kill rcv_urb on error in cxacru_cm() If cxacru_cm() encounters an error while submitting or waiting for snd_urb, it aborts and returns the e…