Vulnerability-Lookup

RHSA-2026:0935

Vulnerability from csaf_redhat - Published: 2026-01-21 19:09 - Updated: 2026-11-06 05:40

Summary

Red Hat Security Advisory: gnupg2 security update

Severity

Important

Notes

Topic: An update for gnupg2 is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards. Security Fix(es): * GnuPG: GnuPG: Information disclosure and potential arbitrary code execution via out-of-bounds write (CVE-2025-68973) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2025-68973

A flaw was found in GnuPG. An attacker can provide crafted input to the `armor_filter` function, which incorrectly increments an index variable, leading to an out-of-bounds write. This memory corruption vulnerability may allow for information disclosure and could potentially lead to arbitrary code execution.

7.8 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

CWE-675 - Multiple Operations on Resource in Single-Operation Context

Affected products

Fixed 8 products

Product	Version	Remediation
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-0:2.2.20-3.el8_8.1.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-0:2.2.20-3.el8_8.1.src	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-0:2.2.20-3.el8_8.1.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-smime-0:2.2.20-3.el8_8.1.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-smime-0:2.2.20-3.el8_8.1.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:gnupg2-0:2.2.20-3.el8_8.1.src	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:gnupg2-0:2.2.20-3.el8_8.1.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:gnupg2-smime-0:2.2.20-3.el8_8.1.x86_64	—	Vendor Fix fix Workaround

Known not affected 9 products

Product	Version	Remediation
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-debuginfo-0:2.2.20-3.el8_8.1.ppc64le	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-debuginfo-0:2.2.20-3.el8_8.1.x86_64	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-debugsource-0:2.2.20-3.el8_8.1.ppc64le	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-debugsource-0:2.2.20-3.el8_8.1.x86_64	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-smime-debuginfo-0:2.2.20-3.el8_8.1.ppc64le	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:gnupg2-smime-debuginfo-0:2.2.20-3.el8_8.1.x86_64	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:gnupg2-debuginfo-0:2.2.20-3.el8_8.1.x86_64	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:gnupg2-debugsource-0:2.2.20-3.el8_8.1.x86_64	—	Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:gnupg2-smime-debuginfo-0:2.2.20-3.el8_8.1.x86_64	—	Workaround

Threats

Impact Important

References

13 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:0935	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2425966	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2025-68973	self
https://bugzilla.redhat.com/show_bug.cgi?id=2425966	external
https://www.cve.org/CVERecord?id=CVE-2025-68973	external
https://nvd.nist.gov/vuln/detail/CVE-2025-68973	external
https://github.com/gpg/gnupg/blob/ff30683418695f5…	external
https://github.com/gpg/gnupg/commit/115d138ba5993…	external
https://gpg.fail/memcpy	external
https://news.ycombinator.com/item?id=46403200	external
https://www.openwall.com/lists/oss-security/2025/…	external

JSON

To clipboard

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      "title": "GnuPG: GnuPG: Information disclosure and potential arbitrary code execution via out-of-bounds write"
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  ]
}

CVE-2025-68973 (GCVE-0-2025-68973)

Vulnerability from cvelistv5 – Published: 2025-12-28 16:19 – Updated: 2026-04-30 03:55

Summary

In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-29 00:00 UTC

CWE

CWE-675 - Multiple Operations on Resource in Single-Operation Context

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2230 records in the last 180 days details

References

9 references

URL	Tags
https://gpg.fail/memcpy
https://news.ycombinator.com/item?id=46403200
https://www.openwall.com/lists/oss-security/2025/…
https://github.com/gpg/gnupg/commit/115d138ba5993…
https://github.com/gpg/gnupg/blob/ff30683418695f5…
https://github.com/gpg/gnupg/compare/gnupg-2.2.50…
https://media.ccc.de/v/39c3-to-sign-or-not-to-sig…
http://www.openwall.com/lists/oss-security/2025/1…
https://lists.debian.org/debian-lts-announce/2026…

Impacted products

1 product

Vendor	Product	Version
GnuPG	GnuPG	Affected: 0 , < 2.2.51 (semver) Affected: 2.3.0 , < 2.4.9 (semver) cpe:2.3:a:gnupg:gnupg:::::::: cpe:2.3:a:gnupg:gnupg::::::::

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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