UBUNTU-CVE-2026-86145

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Source
https://ubuntu.com/security/CVE-2026-86145
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86145.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-86145
Upstream
Downstream
Related
Published
2026-09-05T06:17:00Z
Modified
2026-11-04T03:30:36Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).

References

Affected packages

Ubuntu:Pro:20.04:LTS / pcre2

Package

Name
pcre2
Purl
pkg:deb/ubuntu/pcre2?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.34-7ubuntu0.1+esm1

Affected versions

10.*
10.32-5
10.34-7
10.34-7ubuntu0.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libpcre2-16-0",
            "binary_version": "10.34-7ubuntu0.1+esm1"
        },
        {
            "binary_name": "libpcre2-32-0",
            "binary_version": "10.34-7ubuntu0.1+esm1"
        },
        {
            "binary_name": "libpcre2-8-0",
            "binary_version": "10.34-7ubuntu0.1+esm1"
        },
        {
            "binary_name": "libpcre2-posix2",
            "binary_version": "10.34-7ubuntu0.1+esm1"
        },
        {
            "binary_name": "pcre2-utils",
            "binary_version": "10.34-7ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86145.json"

Ubuntu:22.04:LTS / pcre2

Package

Name
pcre2
Purl
pkg:deb/ubuntu/pcre2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.39-3ubuntu0.2

Affected versions

10.*
10.37-0ubuntu2
10.39-3
10.39-3build1
10.39-3ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libpcre2-16-0",
            "binary_version": "10.39-3ubuntu0.2"
        },
        {
            "binary_name": "libpcre2-32-0",
            "binary_version": "10.39-3ubuntu0.2"
        },
        {
            "binary_name": "libpcre2-8-0",
            "binary_version": "10.39-3ubuntu0.2"
        },
        {
            "binary_name": "libpcre2-posix3",
            "binary_version": "10.39-3ubuntu0.2"
        },
        {
            "binary_name": "pcre2-utils",
            "binary_version": "10.39-3ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86145.json"

Ubuntu:24.04:LTS / pcre2

Package

Name
pcre2
Purl
pkg:deb/ubuntu/pcre2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.42-4ubuntu2.2

Affected versions

10.*
10.42-4
10.42-4ubuntu1
10.42-4ubuntu2
10.42-4ubuntu2.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libpcre2-16-0",
            "binary_version": "10.42-4ubuntu2.2"
        },
        {
            "binary_name": "libpcre2-32-0",
            "binary_version": "10.42-4ubuntu2.2"
        },
        {
            "binary_name": "libpcre2-8-0",
            "binary_version": "10.42-4ubuntu2.2"
        },
        {
            "binary_name": "libpcre2-posix3",
            "binary_version": "10.42-4ubuntu2.2"
        },
        {
            "binary_name": "pcre2-utils",
            "binary_version": "10.42-4ubuntu2.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86145.json"

Ubuntu:26.10 / pcre2

Package

Name
pcre2
Purl
pkg:deb/ubuntu/pcre2?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.46-1ubuntu1

Affected versions

10.*
10.46-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libpcre2-16-0",
            "binary_version": "10.46-1ubuntu1"
        },
        {
            "binary_name": "libpcre2-32-0",
            "binary_version": "10.46-1ubuntu1"
        },
        {
            "binary_name": "libpcre2-8-0",
            "binary_version": "10.46-1ubuntu1"
        },
        {
            "binary_name": "libpcre2-posix3",
            "binary_version": "10.46-1ubuntu1"
        },
        {
            "binary_name": "pcre2-utils",
            "binary_version": "10.46-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86145.json"

Ubuntu:26.04:LTS / pcre2

Package

Name
pcre2
Purl
pkg:deb/ubuntu/pcre2?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.46-1ubuntu0.1

Affected versions

10.*
10.46-1
10.46-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libpcre2-16-0",
            "binary_version": "10.46-1ubuntu0.1"
        },
        {
            "binary_name": "libpcre2-32-0",
            "binary_version": "10.46-1ubuntu0.1"
        },
        {
            "binary_name": "libpcre2-8-0",
            "binary_version": "10.46-1ubuntu0.1"
        },
        {
            "binary_name": "libpcre2-posix3",
            "binary_version": "10.46-1ubuntu0.1"
        },
        {
            "binary_name": "pcre2-utils",
            "binary_version": "10.46-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-86145.json"