CLSA-2026-1789567256

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Import Source
https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json
JSON Data
https://api.osv.dev/v1/vulns/CLSA-2026-1789567256
Upstream
CVE (4)
Published
2026-09-18T08:11:24Z
Modified
2026-10-26T09:31:40Z
Summary
Fix CVE(s): CVE-2026-86138, CVE-2026-86140, CVE-2026-86143, CVE-2026-86144
Details
  • SECURITY UPDATE: integer overflow leading to heap buffer overflow in xmlDictAddQString()
    • debian/patches/CVE-2026-86138.patch: add SIZE_MAX-based overflow guards to the pool size computation in xmlDictAddQString() in dict.c, plus a SIZE_MAX fallback define, so an oversized prefix and name can no longer wrap the allocation size and let the following memcpy() write past the dictionary string pool
    • CVE-2026-86138
References

Affected packages

TuxCare:Ubuntu:20.04
libxml2

Package

Name
libxml2
Purl
pkg:deb/tuxcare/libxml2?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"
libxml2-dev

Package

Name
libxml2-dev
Purl
pkg:deb/tuxcare/libxml2-dev?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"
libxml2-doc

Package

Name
libxml2-doc
Purl
pkg:deb/tuxcare/libxml2-doc?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"
libxml2-utils

Package

Name
libxml2-utils
Purl
pkg:deb/tuxcare/libxml2-utils?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"
python-libxml2

Package

Name
python-libxml2
Purl
pkg:deb/tuxcare/python-libxml2?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"
python3-libxml2

Package

Name
python3-libxml2
Purl
pkg:deb/tuxcare/python3-libxml2?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"