RHSA-2026:36717
Vulnerability from csaf_opensuse - Published: 2026-07-08 00:00 - Updated: 2026-10-09 09:44Summary
security update for opencryptoki
Severity
Moderate
Notes
Title of the patch: security update for opencryptoki
Description of the patch: This security update provides a functional equivalent of RHSA-2026:36717.
The original Red Hat(R) advisory is available from the Red Hat web site at
https://access.redhat.com/errata/RHSA-2026:36717.
Patchnames: RHSA-2026:36717
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
6.8 (Medium)
Affected products
Recommended
8 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-0:3.24.0-5.el9_6.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-ccatok-0:3.24.0-5.el9_6.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-devel-0:3.24.0-5.el9_6.2.i686 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-devel-0:3.24.0-5.el9_6.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-icsftok-0:3.24.0-5.el9_6.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-libs-0:3.24.0-5.el9_6.2.i686 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-libs-0:3.24.0-5.el9_6.2.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Liberty Linux 9.6 EMS:opencryptoki-swtok-0:3.24.0-5.el9_6.2.x86_64 | — |
Vendor Fix
|
Threats
Impact
moderate
References
8 references
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"vulnerabilities": [
{
"cve": "CVE-2026-40253",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-40253"
}
],
"notes": [
{
"category": "general",
"text": "openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.",
"title": "CVE description"
}
],
"product_status": {
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},
"references": [
{
"category": "external",
"summary": "CVE-2026-40253",
"url": "https://www.suse.com/security/cve/CVE-2026-40253"
},
{
"category": "external",
"summary": "SUSE Bug 1262283 for CVE-2026-40253",
"url": "https://bugzilla.suse.com/1262283"
},
{
"category": "external",
"summary": "SUSE Bug 1263819 for CVE-2026-40253",
"url": "https://bugzilla.suse.com/1263819"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
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}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"products": [
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"threats": [
{
"category": "impact",
"date": "2026-07-08T00:00:00Z",
"details": "moderate"
}
],
"title": "CVE-2026-40253"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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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