CVE catalog

CVE-2026-92627

Severity: Medium · CVSS 4.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Aug 31, 2026, 1:47:28 PM UTC
Updated: Sep 16, 2026, 4:17:23 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.23% · Oct 25, 2026

A heap-use-after-free vulnerability exists in H5T__conv_f_f() in src/H5Tconv.c in HDF5 before 1.14.2. When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc() is freed and subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump. This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	hdf5	sid	`2.2.0+repack-5`	vulnerable
Debian	hdf5	forky	`2.2.0+repack-5`	vulnerable
Debian	hdf5	trixie	`1.14.5+repack-3`	vulnerable
Debian	hdf5	bookworm	`1.10.8+repack1-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	hdf5	source	sid	`(unfixed)`	unimportant	Not reported	Not reported
Debian	hdf5	source	forky	`(unfixed)`	unimportant	Not reported	Not reported
Debian	hdf5	source	trixie	`(unfixed)`	unimportant	Not reported	Not reported
Debian	hdf5	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[hdf5-helpers]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[hdf5-tools]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-103]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-103-1]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-cpp-103]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-cpp-103-1]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-dev]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-doc]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · all · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · all · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-fortran-102]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-hl-100]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-hl-cpp-100]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-hl-fortran-100]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-java]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · all · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · all · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-jni]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-mpich-103]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-mpich-103-1]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-mpich-cpp-103-1]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-mpich-dev]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-mpich-fortran-102]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
[libhdf5-mpich-hl-100]Affected
Source package: [hdf5]
Details (2)
- 1.10.8+repack1-1 · amd64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12
- 1.10.8+repack1-1 · arm64 · bookworm
  Affected
  nvd · hdf5 · debian · bookworm; nvd · hdf5 · debian · 12

Next results

Observed: Oct 23, 2026, 9:33:38 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]