UBUNTU-CVE-2026-41565

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Source
https://ubuntu.com/security/CVE-2026-41565
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-41565
Upstream
  • CVE-2026-41565
Published
2026-05-28T16:16:00Z
Modified
2026-06-03T11:23:42Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

CryptX versions before 0.088001 for Perl have a stack buffer overflow in four AEAD decryptverify helpers. The gcmdecryptverify, ccmdecryptverify, chacha20poly1305decryptverify and eaxdecryptverify XS routines copied the caller-supplied authentication tag into a fixed 144-byte stack buffer (MAXBLOCKSIZE) without checking the supplied length. A longer tag overwrites the stack past the buffer. Version 0.088 added the clamp to gcmdecryptverify, and 0.088_001 added it to the other three. Any caller of an affected helper that forwards an attacker-controlled tag longer than the buffer can trigger the overflow.

References

Affected packages

Ubuntu:25.10
libcryptx-perl

Package

Name
libcryptx-perl
Purl
pkg:deb/ubuntu/libcryptx-perl?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.085-1
0.087-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcryptx-perl",
            "binary_version": "0.087-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json"
Ubuntu:26.04:LTS
libcryptx-perl

Package

Name
libcryptx-perl
Purl
pkg:deb/ubuntu/libcryptx-perl?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.087-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcryptx-perl",
            "binary_version": "0.087-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json"
Ubuntu:Pro:18.04:LTS
libcryptx-perl

Package

Name
libcryptx-perl
Purl
pkg:deb/ubuntu/libcryptx-perl?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.055-1
0.056-1
0.056-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcryptx-perl",
            "binary_version": "0.056-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json"
Ubuntu:Pro:20.04:LTS
libcryptx-perl

Package

Name
libcryptx-perl
Purl
pkg:deb/ubuntu/libcryptx-perl?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.064-1
0.064-1build1
0.066-1
0.067-1
0.067-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcryptx-perl",
            "binary_version": "0.067-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json"
Ubuntu:Pro:22.04:LTS
libcryptx-perl

Package

Name
libcryptx-perl
Purl
pkg:deb/ubuntu/libcryptx-perl?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.069-1build1
0.073-1
0.074-1
0.075-1
0.076-1
0.076-1build1
0.076-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcryptx-perl",
            "binary_version": "0.076-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json"
Ubuntu:Pro:24.04:LTS
libcryptx-perl

Package

Name
libcryptx-perl
Purl
pkg:deb/ubuntu/libcryptx-perl?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.078-1
0.080-1
0.080-2
0.080-2build1
0.080-2build2
0.080-2build3
0.080-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcryptx-perl",
            "binary_version": "0.080-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41565.json"