CVE catalog
CVE-2026-56001
A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont
- Severity
- High · CVSS 8.5
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 22, 2026
A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libxfont | sid | 1:2.0.9-1 | fixed |
| Debian | libxfont | forky | 1:2.0.9-1 | fixed |
| Debian | libxfont | trixie | 1:2.0.6-1+deb13u1 | fixed |
| Debian | libxfont | trixie-security | 1:2.0.6-1+deb13u1 | fixed |
| Debian | libxfont | bookworm | 1:2.0.6-1 | vulnerable |
| Debian | libxfont | bookworm-security | 1:2.0.6-1+deb12u1 | fixed |
| Cpe | libxfont | Not reported | 2.0.8 | fixed |
| Cpe | libxfont | Not reported | 1:2.0.6-1+deb13u1build0.24.04.2 | fixed |
| Cpe | libxfont-dev | Not reported | 1:2.0.6-1+deb13u1build0.24.04.2 | fixed |
| Cpe | libxfont2 | Not reported | 1:2.0.6-1+deb13u1build0.24.04.2 | fixed |
| Ubuntu | libxfont | pro | 1:2.0.3-1 | vulnerable |
| Ubuntu | libxfont | pro | 1:2.0.3-1ubuntu0.20.04.1~esm2 | fixed |
| Ubuntu | libxfont2 | 16.04 | 1:2.0.1-3~ubuntu16.04.1 | vulnerable |
| Ubuntu | libxfont2 | 16.04 | 1:2.0.1-3~ubuntu16.04.2 | vulnerable |
| Ubuntu | libxfont2 | 16.04 | 1:2.0.1-3~ubuntu16.04.3 | vulnerable |
| Ubuntu | libxfont | 22.04 | 1:2.0.4-1build3 | vulnerable |
| Ubuntu | libxfont | 22.04 | 1:2.0.5-1 | vulnerable |
| Ubuntu | libxfont | 22.04 | 1:2.0.5-1build1 | vulnerable |
| Ubuntu | libxfont | 22.04 | 1:2.0.5-1ubuntu0.2 | fixed |
| Ubuntu | libxfont | 24.04 | 1:2.0.6-1 | vulnerable |
| Ubuntu | libxfont | 24.04 | 1:2.0.6-1build1 | vulnerable |
| Ubuntu | libxfont | 24.04 | 1:2.0.6-1+deb13u1build0.24.04.2 | fixed |
| Ubuntu | libxfont | 25.10 | 1:2.0.6-1build1 | vulnerable |
| Ubuntu | libxfont | 26.04 | 1:2.0.6-1build1 | vulnerable |
| Ubuntu | libxfont | 26.04 | 1:2.0.6-1build2 | vulnerable |
| Ubuntu | libxfont | 26.04 | 1:2.0.6-2 | vulnerable |
| Ubuntu | libxfont | 26.04 | 1:2.0.6-2ubuntu0.2 | fixed |
| Suse | libXfont2 | linux enterprise server 16.0 | 2.0.7-160000.4.1 | fixed |
| Suse | libXfont2 | linux enterprise server for sap applications 16.0 | 2.0.7-160000.4.1 | fixed |
| Opensuse | libXfont2 | leap 16.0 | 2.0.7-160000.4.1 | fixed |
| Opensuse | libXfont2 | tumbleweed | 2.0.7-2.1 | fixed |
| Suse | libXfont2 | linux enterprise server 12 sp5-ltss | 2.0.3-3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise module for basesystem 15 sp7 | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise high performance computing 15 sp4-espos | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise high performance computing 15 sp4-ltss | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise high performance computing 15 sp5-espos | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise high performance computing 15 sp5-ltss | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise server 15 sp4-ltss | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise server 15 sp5-ltss | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise server 15 sp6-ltss | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise server for sap applications 15 sp4 | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise server for sap applications 15 sp5 | 2.0.3-150000.3.3.1 | fixed |
| Suse | libXfont2 | linux enterprise server for sap applications 15 sp6 | 2.0.3-150000.3.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libxfont | source | sid | 1:2.0.8-1 | not yet assigned | Not reported | [1141702] |
| Debian | libxfont | source | forky | 1:2.0.8-1 | not yet assigned | Not reported | [1141702] |
| Debian | libxfont | source | trixie | 1:2.0.6-1+deb13u1 | not yet assigned | Not reported | [1141702] |
| Debian | libxfont | source | bookworm | 1:2.0.6-1+deb12u1 | not yet assigned | Not reported | [1141702] |
| Cpe | libxfont | cpe | Not reported | 2.0.8 | Not reported | Not reported | Not reported |
| Cpe | libxfont | cpe | Not reported | 1:2.0.6-1+deb13u1build0.24.04.2 | Not reported | Not reported | Not reported |
| Cpe | libxfont-dev | cpe | Not reported | 1:2.0.6-1+deb13u1build0.24.04.2 | Not reported | Not reported | Not reported |
| Cpe | libxfont2 | cpe | Not reported | 1:2.0.6-1+deb13u1build0.24.04.2 | Not reported | Not reported | Not reported |
| Ubuntu | libxfont | deb | pro | 1:2.0.3-1ubuntu0.20.04.1~esm2 | Not reported | UBUNTU-CVE-2026-56001 | Not reported |
| Ubuntu | libxfont | deb | 22.04 | 1:2.0.5-1ubuntu0.2 | Not reported | UBUNTU-CVE-2026-56001 | Not reported |
| Ubuntu | libxfont | deb | 24.04 | 1:2.0.6-1+deb13u1build0.24.04.2 | Not reported | UBUNTU-CVE-2026-56001 | Not reported |
| Ubuntu | libxfont | deb | 26.04 | 1:2.0.6-2ubuntu0.2 | Not reported | UBUNTU-CVE-2026-56001 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server 16.0 | 2.0.7-160000.4.1 | Not reported | SUSE-SU-2026:22614-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server for sap applications 16.0 | 2.0.7-160000.4.1 | Not reported | SUSE-SU-2026:22614-1 | Not reported |
| Opensuse | libXfont2 | rpm | leap 16.0 | 2.0.7-160000.4.1 | Not reported | OPENSUSE-SU-2026:21284-1 | Not reported |
| Opensuse | libXfont2 | rpm | tumbleweed | 2.0.7-2.1 | Not reported | OPENSUSE-SU-2026:11233-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server 12 sp5-ltss | 2.0.3-3.3.1 | Not reported | SUSE-SU-2026:2793-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise module for basesystem 15 sp7 | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise high performance computing 15 sp4-espos | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise high performance computing 15 sp4-ltss | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise high performance computing 15 sp5-espos | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise high performance computing 15 sp5-ltss | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server 15 sp4-ltss | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server 15 sp5-ltss | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server 15 sp6-ltss | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server for sap applications 15 sp4 | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server for sap applications 15 sp5 | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
| Suse | libXfont2 | rpm | linux enterprise server for sap applications 15 sp6 | 2.0.3-150000.3.3.1 | Not reported | SUSE-SU-2026:2794-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libxfont2]Affected
Source package: [libxfont]
Details (4)
1:2.0.6-1· amd64 · bookwormAffected · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
1:2.0.6-1· arm64 · bookwormAffected · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
1:2.0.6-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
1:2.0.6-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
- [libxfont-dev]Affected
Source package: [libxfont]
Details (4)
1:2.0.6-1· amd64 · bookwormAffected · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
1:2.0.6-1· arm64 · bookwormAffected · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
1:2.0.6-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
1:2.0.6-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1:2.0.6-1+deb12u1nvd · libxfont · debian · bookworm; nvd · libxfont · debian · 12
[Debian 13 (Trixie)]
- [libxfont2]Affected
Source package: [libxfont]
Details (4)
1:2.0.6-1+b3· amd64 · trixieAffected · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
1:2.0.6-1+b3· arm64 · trixieAffected · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
1:2.0.6-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
1:2.0.6-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
- [libxfont-dev]Affected
Source package: [libxfont]
Details (4)
1:2.0.6-1+b3· amd64 · trixieAffected · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
1:2.0.6-1+b3· arm64 · trixieAffected · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
1:2.0.6-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
1:2.0.6-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
1:2.0.6-1+deb13u1nvd · libxfont · debian · 13
[openSUSE Tumbleweed]
- [libXfont2-2]Unknown
Source package: [libXfont2]
Details (1)
2.0.7-3.1· x86_64 · tumbleweedUnknown · Fixed:
2.0.7-2.1Version impact unknown
nvd · libXfont2 · opensuse · tumbleweed
- [libXfont2-2-32bit]Unknown
Source package: [libXfont2]
Details (1)
2.0.7-3.1· x86_64 · tumbleweedUnknown · Fixed:
2.0.7-2.1Version impact unknown
nvd · libXfont2 · opensuse · tumbleweed
- [libXfont2-devel]Unknown
Source package: [libXfont2]
Details (1)
2.0.7-3.1· x86_64 · tumbleweedUnknown · Fixed:
2.0.7-2.1Version impact unknown
nvd · libXfont2 · opensuse · tumbleweed
- [libXfont2-devel-32bit]Unknown
Source package: [libXfont2]
Details (1)
2.0.7-3.1· x86_64 · tumbleweedUnknown · Fixed:
2.0.7-2.1Version impact unknown
nvd · libXfont2 · opensuse · tumbleweed
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:47079]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_2793-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-56001]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-56001]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22614-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2793-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2794-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-56001]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11233-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21284-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-56001]
- [https://ubuntu.com/security/notices/USN-8560-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2378.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]