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Fencer Vulns
medium 6.5

CVE-2019-8396 json

A buffer overflow in H5O__layout_encode in H5Olayout.c in the HDF HDF5 through 1.10.4 library allows attackers to cause a denial of service…

published 2019-02-17 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-17786

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

A buffer overflow in H5O__layout_encode in H5Olayout.c in the HDF HDF5 through 1.10.4 library allows attackers to cause a denial of service via a crafted HDF5 file. This issue was triggered while repacking an HDF5 file, aka "Invalid write of size 2."

Patch / fix

  • hdf5 Debian 14, Debian 13 1.14.5+repack-1

debian advisories DEBIAN-CVE-2019-8396

  • hdf5_1_10_11-gnu-hpc SLE Module for HPC 12 1.10.11-3.21.1
  • hdf5_1_10_11-gnu-mvapich2-hpc SLE Module for HPC 12 1.10.11-3.21.1
  • hdf5_1_10_11-gnu-openmpi1-hpc SLE Module for HPC 12 1.10.11-3.21.1
  • hdf5_1_10_11-gnu-hpc SLE Module for Package Hub 15 SP5, SLE Module for HPC 15 SP5, openSUSE Leap 15.5 1.10.11-150400.3.12.1
  • hdf5_1_10_11-gnu-mpich-hpc SLE Module for Package Hub 15 SP5, SLE Module for HPC 15 SP5, openSUSE Leap 15.5 1.10.11-150400.3.12.1
  • hdf5_1_10_11-gnu-mvapich2-hpc SLE Module for Package Hub 15 SP5, SLE Module for HPC 15 SP5, openSUSE Leap 15.5 1.10.11-150400.3.12.1
  • hdf5_1_10_11-gnu-openmpi3-hpc SLE Module for Package Hub 15 SP5, SLE Module for HPC 15 SP5, openSUSE Leap 15.5 1.10.11-150400.3.12.1
  • hdf5_1_10_11-gnu-openmpi4-hpc SLE Module for Package Hub 15 SP5, SLE Module for HPC 15 SP5, openSUSE Leap 15.5 1.10.11-150400.3.12.1

suse advisories SUSE-SU-2024:3144-1SUSE-SU-2024:0882-1SUSE-SU-2024:0538-1SUSE-SU-2022:3829-1SUSE-SU-2022:3828-1SUSE-SU-2022:3827-1

  • hdf5 Arch Linux 1.10.5-1

arch linux advisories AVG-901

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-8396 updated cvss 5.5

hdf5: buffer overflow in function H5O__layout_encode in H5Olayout.c

  • Red Hat OpenStack Platform 8 (Liberty) hdf5 Red Hat OpenStack Platform 9 (Mitaka) hdf5 Red Hat OpenStack Platform 10 (Newton) hdf5 Red Hat OpenStack Platform 13 (Queens) hdf5 Red Hat OpenStack Platform 14 (Rocky) hdf5 Red Hat OpenStack Platform 15 (Stein) hdf5
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/magicSwordsMan/PAAFS/tree/master/vul4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.