Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-31085

CVE-2023-31085MEDIUM

n/a n/a — An issue was discovered in drivers/mtd/ubi/cdev.c in the Linux kernel 6.2.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0038   30.5     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Apr 24  Reserved by mitre
  Apr 24  Published (CNA: mitre)
  Oct 14  ENRICHED — CVE-2023-31085. Received CVSS 5.5 and CPE data from NVD.

CWE-369 · CNA: mitre · CVSS v3.1 · 6 references · NVD status: Modified

Description

An issue was discovered in drivers/mtd/ubi/cdev.c in the Linux kernel 6.2. There is a divide-by-zero error in do_div(sz,mtd->erasesize), used indirectly by ctrl_cdev_ioctl, when mtd->erasesize is 0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 24, 2023	Reserved	Reserved by mitre
April 24, 2023	Published	Published (CNA: mitre)
October 14, 2026	ENRICHED	ENRICHED — CVE-2023-31085. Received CVSS 5.5 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-369

References (6)

Authoritative record: CVE-2023-31085 at cve.org

Weaknesses: CWE-369

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-31085 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.