SUSE-SU-2026:1076-1
Vulnerability from csaf_suse - Published: 2026-03-26 12:42 - Updated: 2026-09-16 19:11Summary
Security update for python-pyasn1
Severity
Important
Notes
Title of the patch: Security update for python-pyasn1
Description of the patch: This update for python-pyasn1 fixes the following issues:
- CVE-2026-30922: Denial of Service via Unbounded Recursion (bsc#1259803).
Patchnames: SUSE-2026-1076,SUSE-SLE-SERVER-12-SP5-LTSS-2026-1076,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1076
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
7.5 (High)
Affected products
Recommended
10 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python3-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP5-LTSS:python-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP5-LTSS:python3-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python3-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-pyasn1-0.1.9-4.14.1.noarch | — |
Vendor Fix
|
Threats
Impact
important
References
8 references
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"vulnerabilities": [
{
"cve": "CVE-2026-30922",
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"notes": [
{
"category": "general",
"text": "pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the `pyasn1` library is vulnerable to a Denial of Service (DoS) attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands of nested `SEQUENCE` (`0x30`) or `SET` (`0x31`) tags with \"Indefinite Length\" (`0x80`) markers. This forces the decoder to recursively call itself until the Python interpreter crashes with a `RecursionError` or consumes all available memory (OOM), crashing the host application. This is a distinct vulnerability from CVE-2026-23490 (which addressed integer overflows in OID decoding). The fix for CVE-2026-23490 (`MAX_OID_ARC_CONTINUATION_OCTETS`) does not mitigate this recursion issue. Version 0.6.3 fixes this specific issue.",
"title": "CVE description"
}
],
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"remediations": [
{
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"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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"scores": [
{
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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"title": "CVE-2026-30922"
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}
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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