CVE-2019-20398

mediumPriorität · verfolgen · 27EPSS 0.018 · 79. PerzentilEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.82% (79th) EPSS

CVSS 4.3 · medium

Is it mine?

34 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · bewertet 2026-10-28

A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenlibyang-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-0:1.0.184-1.el8.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-cpp-debuginfo-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-cpp-debuginfo-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-cpp-debuginfo-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-cpp-debuginfo-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-cpp-debuginfo-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debuginfo-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debuginfo-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debuginfo-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debuginfo-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debuginfo-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debugsource-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debugsource-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debugsource-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debugsource-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenlibyang-debugsource-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenpython3-libyang-debuginfo-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenpython3-libyang-debuginfo-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenpython3-libyang-debuginfo-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenpython3-libyang-debuginfo-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906
Behobenpython3-libyang-debuginfo-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:1906

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

6.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 2.8 · Auswirkung 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · Red Hat Product Security US

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-476USprimärCWE-476US

betroffene Produkte (34)

Betroffene Produkte und Versionsbereiche.

n/a n/a≤ n/aenisa_euvdEU
cesnet libyang= 0.11nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.12nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.13nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.14nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.15nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.16nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 1.0nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
libyang-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-0:1.0.184-1.el8.src as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-cpp-debuginfo-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-cpp-debuginfo-0:1.0.184-1.el8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-cpp-debuginfo-0:1.0.184-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-cpp-debuginfo-0:1.0.184-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-cpp-debuginfo-0:1.0.184-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS
libyang-debuginfo-0:1.0.184-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)alle Versionenfixedredhat_csafUS

20 von 34 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

RHEA-2021:1906Red Hat Enhancement Advisory: libyang bug fix and enhancement update2021-05-18csaf · redhat_csafUS
An update for libyang is now available for Red Hat Enterprise Linux 8.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

veröffentlicht 2020-01-22geändert 2026-06-17

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+8817 weitere

Referenzen (17)

Externe Belege — Patches, Meldungen, Analysen.

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