Vulnerability-Lookup

SUSE-SU-2026:3577-1

Vulnerability from csaf_suse - Published: 2026-08-11 11:53 - Updated: 2026-09-17 16:40

Summary

Security update for snpguest

Severity

Important

Notes

Title of the patch: Security update for snpguest

Description of the patch: This update for snpguest fixes the following issues: - CVE-2026-25541: bytes: integer overflow in 'BytesMut:reserve' can lead to undefined behavior and crashes (bsc#1274139). - CVE-2026-41678: openssl: incorrect bounds assertion in AES keywrap can lead to an out-of-bounds write (bsc#1270642). - CVE-2026-42327: openssl: missing validation when processing certificates with non-UTF-8 OCSP URLs can lead to undefined behavior (bsc#1270527).

Patchnames: SUSE-2026-3577,SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3577,SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3577

CVE-2026-25541

7.5 (High)


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

Affected products

Recommended 3 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Server 15 SP6-LTSS:snpguest-0:0.3.2-150600.3.14.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 15 SP6:snpguest-0:0.3.2-150600.3.14.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP6:snpguest-0:0.3.2-150600.3.14.1.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2026-41678

7.4 (High)


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

Affected products

Recommended 3 products, the same list as for CVE-2026-25541

Threats

Impact important

CVE-2026-42327

7.5 (High)


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

Affected products

Recommended 3 products, the same list as for CVE-2026-25541

Threats

Impact important

References

18 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1270527	self
https://bugzilla.suse.com/1270642	self
https://bugzilla.suse.com/1274139	self
https://www.suse.com/security/cve/CVE-2026-25541/	self
https://www.suse.com/security/cve/CVE-2026-41678/	self
https://www.suse.com/security/cve/CVE-2026-42327/	self
https://www.suse.com/security/cve/CVE-2026-25541	external
https://bugzilla.suse.com/1271347	external
https://www.suse.com/security/cve/CVE-2026-41678	external
https://bugzilla.suse.com/1270641	external
https://bugzilla.suse.com/1271911	external
https://www.suse.com/security/cve/CVE-2026-42327	external
https://bugzilla.suse.com/1270454	external
https://bugzilla.suse.com/1271911	external

JSON

To clipboard

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        {
          "category": "general",
          "text": "Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition \"v_capacity \u003e= new_cap + offset\" uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB. This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks. This issue has been patched in version 1.11.1.",
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          "category": "general",
          "text": "rust-openssl provides OpenSSL bindings for the Rust programming language.  From  to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 \u003c= in_.len(), but this condition is reversed. The intended invariant is out.len() \u003e= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78.",
          "title": "CVE description"
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      ],
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        {
          "category": "general",
          "text": "rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.7 to before 0.10.79, X509Ref::ocsp_responders returns OCSP responder URLs from a certificate\u0027s AIA extension as OpensslString, whose Deref\u003cTarget = str\u003e wraps the raw bytes with str::from_utf8_unchecked. OpenSSL does not enforce that the underlying IA5String is ASCII, so a certificate with non-UTF-8 bytes in its OCSP accessLocation causes safe Rust code to construct a \u0026str that violates the UTF-8 invariant - resulting in undefined behavior. This vulnerability is fixed in 0.10.79.",
          "title": "CVE description"
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            "SUSE Linux Enterprise Server 15 SP6-LTSS:snpguest-0:0.3.2-150600.3.14.1.x86_64",
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            "SUSE Linux Enterprise Server for SAP Applications 15 SP6:snpguest-0:0.3.2-150600.3.14.1.x86_64"
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Server 15 SP6-LTSS:snpguest-0:0.3.2-150600.3.14.1.x86_64",
            "SUSE Linux Enterprise Server 15 SP6:snpguest-0:0.3.2-150600.3.14.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 15 SP6:snpguest-0:0.3.2-150600.3.14.1.x86_64"
          ]
        }
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          "category": "impact",
          "date": "2026-08-11T11:53:28Z",
          "details": "important"
        }
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      "title": "CVE-2026-42327"
    }
  ]
}

CVE-2026-25541 (GCVE-0-2026-25541)

Vulnerability from cvelistv5 – Published: 2026-02-04 22:03 – Updated: 2026-02-05 15:13

Title

Bytes is vulnerable to integer overflow in BytesMut::reserve

Summary

Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition "v_capacity >= new_cap + offset" uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB. This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks. This issue has been patched in version 1.11.1.

Severity

5.5 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-05 15:13 UTC

CWE

CWE-680 - Integer Overflow to Buffer Overflow

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/tokio-rs/bytes/security/adviso…	x_refsource_CONFIRM
https://github.com/tokio-rs/bytes/commit/d0293b0e…	x_refsource_MISC
https://github.com/tokio-rs/bytes/releases/tag/v1.11.1	x_refsource_MISC
https://rustsec.org/advisories/RUSTSEC-2026-0007.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tokio-rs	bytes	Affected: >= 1.2.1, < 1.11.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-25541",
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                "timestamp": "2026-02-05T15:13:12.910010Z",
                "version": "2.0.3"
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          "dateUpdated": "2026-02-05T15:13:34.031Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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          "vendor": "tokio-rs",
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        {
          "lang": "en",
          "value": "Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition \"v_capacity \u003e= new_cap + offset\" uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB. This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks. This issue has been patched in version 1.11.1."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
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            "vulnIntegrityImpact": "NONE"
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              "cweId": "CWE-680",
              "description": "CWE-680: Integer Overflow to Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
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        }
      ],
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        "dateUpdated": "2026-02-04T22:03:53.554Z",
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        {
          "name": "https://github.com/tokio-rs/bytes/security/advisories/GHSA-434x-w66g-qw3r",
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            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tokio-rs/bytes/security/advisories/GHSA-434x-w66g-qw3r"
        },
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          "name": "https://github.com/tokio-rs/bytes/commit/d0293b0e35838123c51ca5dfdf468ecafee4398f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tokio-rs/bytes/commit/d0293b0e35838123c51ca5dfdf468ecafee4398f"
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          "name": "https://github.com/tokio-rs/bytes/releases/tag/v1.11.1",
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            "x_refsource_MISC"
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        },
        {
          "name": "https://rustsec.org/advisories/RUSTSEC-2026-0007.html",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://rustsec.org/advisories/RUSTSEC-2026-0007.html"
        }
      ],
      "source": {
        "advisory": "GHSA-434x-w66g-qw3r",
        "discovery": "UNKNOWN"
      },
      "title": "Bytes is vulnerable to integer overflow in BytesMut::reserve"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25541",
    "datePublished": "2026-02-04T22:03:53.554Z",
    "dateReserved": "2026-02-02T19:59:47.375Z",
    "dateUpdated": "2026-02-05T15:13:34.031Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-41678 (GCVE-0-2026-41678)

Vulnerability from cvelistv5 – Published: 2026-04-24 17:18 – Updated: 2026-04-24 18:33

Title

rust-openssl: Incorrect bounds assertion in aes key wrap

Summary

rust-openssl provides OpenSSL bindings for the Rust programming language. From to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 <= in_.len(), but this condition is reversed. The intended invariant is out.len() >= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78.

Severity

7.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-24 18:27 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/rust-openssl/rust-openssl/secu…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
rust-openssl	rust-openssl	Affected: >= 0.10.24, < 0.10.78

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41678",
                "options": [
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-24T18:27:46.176271Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        "title": "CISA ADP Vulnrichment"
      }
    ],
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      "affected": [
        {
          "product": "rust-openssl",
          "vendor": "rust-openssl",
          "versions": [
            {
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            }
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        }
      ],
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          "lang": "en",
          "value": "rust-openssl provides OpenSSL bindings for the Rust programming language.  From  to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 \u003c= in_.len(), but this condition is reversed. The intended invariant is out.len() \u003e= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
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            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
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              "description": "CWE-787: Out-of-bounds Write",
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          "url": "https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9"
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        "advisory": "GHSA-8c75-8mhr-p7r9",
        "discovery": "UNKNOWN"
      },
      "title": "rust-openssl: Incorrect bounds assertion in aes key wrap"
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CVE-2026-42327 (GCVE-0-2026-42327)

Vulnerability from cvelistv5 – Published: 2026-05-14 20:17 – Updated: 2026-05-15 18:05

Title

rust-openssl: undefined behavior in X509Ref::ocsp_responders for certificates with non-UTF-8 OCSP URLs

Summary

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.7 to before 0.10.79, X509Ref::ocsp_responders returns OCSP responder URLs from a certificate's AIA extension as OpensslString, whose Deref<Target = str> wraps the raw bytes with str::from_utf8_unchecked. OpenSSL does not enforce that the underlying IA5String is ASCII, so a certificate with non-UTF-8 bytes in its OCSP accessLocation causes safe Rust code to construct a &str that violates the UTF-8 invariant — resulting in undefined behavior. This vulnerability is fixed in 0.10.79.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-15 16:28 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/rust-openssl/rust-openssl/secu…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
rust-openssl	rust-openssl	Affected: >= 0.9.7, < 0.10.79

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42327",
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                  },
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-15T16:28:41.920658Z",
                "version": "2.0.3"
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        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "rust-openssl",
          "vendor": "rust-openssl",
          "versions": [
            {
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              "version": "\u003e= 0.9.7, \u003c 0.10.79"
            }
          ]
        }
      ],
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        {
          "lang": "en",
          "value": "rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.7 to before 0.10.79, X509Ref::ocsp_responders returns OCSP responder URLs from a certificate\u0027s AIA extension as OpensslString, whose Deref\u003cTarget = str\u003e wraps the raw bytes with str::from_utf8_unchecked. OpenSSL does not enforce that the underlying IA5String is ASCII, so a certificate with non-UTF-8 bytes in its OCSP accessLocation causes safe Rust code to construct a \u0026str that violates the UTF-8 invariant \u2014 resulting in undefined behavior. This vulnerability is fixed in 0.10.79."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
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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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

SUSE-SU-2026:3577-1

CVE-2026-25541 (GCVE-0-2026-25541)

CVE-2026-41678 (GCVE-0-2026-41678)

CVE-2026-42327 (GCVE-0-2026-42327)

Tags

Sightings

Nomenclature

Related by attack behaviour