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CVE-2018-16884

Status: ModifiedHigh (8)—

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (5)

Canonical — Ubuntu LinuxDebian — Debian LinuxLinux — Linux KernelRedhat — Enterprise LinuxRedhat — Enterprise MRG

CWEs

References

Raw JSON (NVD)

Show
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      "value": "Se ha encontrado un error en el subsistema de archivos NFS41+ del kernel de Linux. Las comparticiones de NFS41+ montadas en diferentes espacios de nombre al mismo tiempo pueden hacer que bc_svc_process() emplee el ID de canal trasero erróneo y provoque una vulnerabilidad de uso de memoria previamente liberada. Así, un usuario contenedor malicioso puede provocar la corrupción de la memoria host del kernel y un pánico del sistema. Debido a la naturaleza del error, no se puede descartar totalmente un escalado de privilegios."
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  "lastModified": "2026-06-17T01:44:59.483",
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