UBUNTU-CVE-2026-92391

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Source

https://ubuntu.com/security/CVE-2026-92391

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-92391

Upstream

CVE-2026-92391

Downstream

USN (2)

Related

USN-8927-1

Published

2026-10-14T06:00:00Z

Modified

2026-10-17T13:01:17Z

Severity

Ubuntu - low

Summary

[none]

Details

A deeply nested multipart MIME structure constructed via the public API causes a stack overflow in libcurl during normal cleanup operations. An excessive recursion depth within curl_mime_free leads to unbounded stack frame allocation during structure traversal, ultimately crashing the host process.

References

Affected packages

Ubuntu:22.04:LTS

curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.74.0-1.3ubuntu2

7.74.0-1.3ubuntu3

7.80.0-3

7.81.0-1

7.81.0-1ubuntu1.1

7.81.0-1ubuntu1.2

7.81.0-1ubuntu1.3

7.81.0-1ubuntu1.4

7.81.0-1ubuntu1.6

7.81.0-1ubuntu1.7

7.81.0-1ubuntu1.8

7.81.0-1ubuntu1.10

7.81.0-1ubuntu1.11

7.81.0-1ubuntu1.13

7.81.0-1ubuntu1.14

7.81.0-1ubuntu1.15

7.81.0-1ubuntu1.16

7.81.0-1ubuntu1.17

7.81.0-1ubuntu1.18

7.81.0-1ubuntu1.19

7.81.0-1ubuntu1.20

7.81.0-1ubuntu1.21

7.81.0-1ubuntu1.22

7.81.0-1ubuntu1.23

7.81.0-1ubuntu1.24

7.81.0-1ubuntu1.25

7.81.0-1ubuntu1.26

7.81.0-1ubuntu1.27

7.81.0-1ubuntu1.29

7.81.0-1ubuntu1.30

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "7.81.0-1ubuntu1.30"
        },
        {
            "binary_name":  "libcurl3-gnutls",
            "binary_version":  "7.81.0-1ubuntu1.30"
        },
        {
            "binary_name":  "libcurl3-nss",
            "binary_version":  "7.81.0-1ubuntu1.30"
        },
        {
            "binary_name":  "libcurl4",
            "binary_version":  "7.81.0-1ubuntu1.30"
        }
    ],
    "priority_reason":  "Upstream defined this as low severity"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json"

Ubuntu:24.04:LTS

curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.2.1-1ubuntu3

8.2.1-1ubuntu3.1

8.4.0-2ubuntu1

8.5.0-2ubuntu1

8.5.0-2ubuntu2

8.5.0-2ubuntu8

8.5.0-2ubuntu9

8.5.0-2ubuntu10

8.5.0-2ubuntu10.1

8.5.0-2ubuntu10.2

8.5.0-2ubuntu10.3

8.5.0-2ubuntu10.4

8.5.0-2ubuntu10.5

8.5.0-2ubuntu10.6

8.5.0-2ubuntu10.7

8.5.0-2ubuntu10.8

8.5.0-2ubuntu10.9

8.5.0-2ubuntu10.10

8.5.0-2ubuntu10.11

8.5.0-2ubuntu10.12

8.5.0-2ubuntu10.13

8.5.0-2ubuntu10.15

8.5.0-2ubuntu10.16

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "8.5.0-2ubuntu10.16"
        },
        {
            "binary_name":  "libcurl3t64-gnutls",
            "binary_version":  "8.5.0-2ubuntu10.16"
        },
        {
            "binary_name":  "libcurl4t64",
            "binary_version":  "8.5.0-2ubuntu10.16"
        }
    ],
    "priority_reason":  "Upstream defined this as low severity"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json"

Ubuntu:26.04:LTS

curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

8.18.0-1ubuntu2.8

Affected versions

8.*

8.14.1-2ubuntu1

8.17.0-1ubuntu1

8.18.0-1ubuntu1

8.18.0-1ubuntu2

8.18.0-1ubuntu2.1

8.18.0-1ubuntu2.2

8.18.0-1ubuntu2.3

8.18.0-1ubuntu2.4

8.18.0-1ubuntu2.5

8.18.0-1ubuntu2.7

Ecosystem specific

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "8.18.0-1ubuntu2.8"
        },
        {
            "binary_name":  "libcurl3t64-gnutls",
            "binary_version":  "8.18.0-1ubuntu2.8"
        },
        {
            "binary_name":  "libcurl4t64",
            "binary_version":  "8.18.0-1ubuntu2.8"
        }
    ],
    "priority_reason":  "Upstream defined this as low severity"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json"

Ubuntu:26.10

curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=stonking

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.18.0-1ubuntu2

8.20.0-2ubuntu1

8.20.0-2ubuntu3

8.20.0-2ubuntu10

8.20.0-2ubuntu11

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "8.20.0-2ubuntu11"
        },
        {
            "binary_name":  "libcurl3t64-gnutls",
            "binary_version":  "8.20.0-2ubuntu11"
        },
        {
            "binary_name":  "libcurl4t64",
            "binary_version":  "8.20.0-2ubuntu11"
        }
    ],
    "priority_reason":  "Upstream defined this as low severity"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json"

Ubuntu:Pro:18.04:LTS

curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.55.1-1ubuntu2

7.55.1-1ubuntu2.1

7.57.0-1ubuntu1

7.58.0-2ubuntu1

7.58.0-2ubuntu2

7.58.0-2ubuntu3

7.58.0-2ubuntu3.1

7.58.0-2ubuntu3.2

7.58.0-2ubuntu3.3

7.58.0-2ubuntu3.5

7.58.0-2ubuntu3.6

7.58.0-2ubuntu3.7

7.58.0-2ubuntu3.8

7.58.0-2ubuntu3.9

7.58.0-2ubuntu3.10

7.58.0-2ubuntu3.12

7.58.0-2ubuntu3.13

7.58.0-2ubuntu3.14

7.58.0-2ubuntu3.15

7.58.0-2ubuntu3.16

7.58.0-2ubuntu3.17

7.58.0-2ubuntu3.18

7.58.0-2ubuntu3.19

7.58.0-2ubuntu3.20

7.58.0-2ubuntu3.21

7.58.0-2ubuntu3.22

7.58.0-2ubuntu3.23

7.58.0-2ubuntu3.24

7.58.0-2ubuntu3.24+esm1

7.58.0-2ubuntu3.24+esm2

7.58.0-2ubuntu3.24+esm3

7.58.0-2ubuntu3.24+esm4

7.58.0-2ubuntu3.24+esm5

7.58.0-2ubuntu3.24+esm7

7.58.0-2ubuntu3.24+esm8

7.58.0-2ubuntu3.24+esm9

7.58.0-2ubuntu3.24+esm10

7.58.0-2ubuntu3.24+esm11

7.58.0-2ubuntu3.24+esm12

7.58.0-2ubuntu3.24+esm14

7.58.0-2ubuntu3.24+esm15

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "7.58.0-2ubuntu3.24+esm15"
        },
        {
            "binary_name":  "libcurl3-gnutls",
            "binary_version":  "7.58.0-2ubuntu3.24+esm15"
        },
        {
            "binary_name":  "libcurl3-nss",
            "binary_version":  "7.58.0-2ubuntu3.24+esm15"
        },
        {
            "binary_name":  "libcurl4",
            "binary_version":  "7.58.0-2ubuntu3.24+esm15"
        }
    ],
    "priority_reason":  "Upstream defined this as low severity"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json"

Ubuntu:Pro:20.04:LTS

curl

Package

Name: curl
Purl: pkg:deb/ubuntu/curl?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.65.3-1ubuntu3

7.65.3-1ubuntu4

7.66.0-1ubuntu1

7.67.0-2ubuntu1

7.68.0-1ubuntu1

7.68.0-1ubuntu2

7.68.0-1ubuntu2.1

7.68.0-1ubuntu2.2

7.68.0-1ubuntu2.4

7.68.0-1ubuntu2.5

7.68.0-1ubuntu2.6

7.68.0-1ubuntu2.7

7.68.0-1ubuntu2.10

7.68.0-1ubuntu2.11

7.68.0-1ubuntu2.12

7.68.0-1ubuntu2.13

7.68.0-1ubuntu2.14

7.68.0-1ubuntu2.15

7.68.0-1ubuntu2.16

7.68.0-1ubuntu2.18

7.68.0-1ubuntu2.19

7.68.0-1ubuntu2.20

7.68.0-1ubuntu2.21

7.68.0-1ubuntu2.22

7.68.0-1ubuntu2.23

7.68.0-1ubuntu2.24

7.68.0-1ubuntu2.25

7.68.0-1ubuntu2.25+esm2

7.68.0-1ubuntu2.25+esm3

7.68.0-1ubuntu2.25+esm4

7.68.0-1ubuntu2.25+esm5

7.68.0-1ubuntu2.25+esm6

7.68.0-1ubuntu2.25+esm7

7.68.0-1ubuntu2.25+esm9

7.68.0-1ubuntu2.25+esm10

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "7.68.0-1ubuntu2.25+esm10"
        },
        {
            "binary_name":  "libcurl3-gnutls",
            "binary_version":  "7.68.0-1ubuntu2.25+esm10"
        },
        {
            "binary_name":  "libcurl3-nss",
            "binary_version":  "7.68.0-1ubuntu2.25+esm10"
        },
        {
            "binary_name":  "libcurl4",
            "binary_version":  "7.68.0-1ubuntu2.25+esm10"
        }
    ],
    "priority_reason":  "Upstream defined this as low severity"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-92391.json"