boxscore/security
CVE · referencelatest edition

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

CVE-2022-48828MEDIUM
Linux Linux — NFSD: Fix ia_size underflow
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0063   47.3     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 –  —
  Linux    2.6.12 –                                    5.4.295
TIMELINE
  Jul 16  Reserved by Linux
  Jul 16  Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2022-48828 (Linux). CVSS 9.1 → 5.5 (NVD).
CWE-191 · CNA: Linux · CVSS v3.1 · 7 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix ia_size underflow iattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and NFSv4 both define file size as an unsigned 64-bit type. Thus there is a range of valid file size values an NFS client can send that is already larger than Linux can handle. Currently decode_fattr4() dumps a full u64 value into ia_size. If that value happens to be larger than S64_MAX, then ia_size underflows. I'm about to fix up the NFSv3 behavior as well, so let's catch the underflow in the common code path: nfsd_setattr().

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
July 16, 2024ReservedReserved by Linux
July 16, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2022-48828 (Linux). CVSS 9.1 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
LinuxLinux2.6.125.4.295

Weaknesses

CWE-191

References (7)

Related

Authoritative record: CVE-2022-48828 at cve.org

Vendors: linux

Weaknesses: CWE-191

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-48828 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 Wednesday, August 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.