OESA-2026-3466

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3466
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3466.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3466
Upstream
  • CVE-2026-44950
  • CVE-2026-59679
Published
2026-08-20T10:00:34Z
Modified
2026-08-20T10:15:13Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
libXfont2 security update
Details

libXfont provides the core of the legacy X11 font system, handling the index files (fonts.dir, fonts.alias, fonts.scale), the various font file formats, and rasterizing them. contains runtime library.

Security Fix(es):

A flaw was found in the libXfont2 font-server client. This heap buffer overflow vulnerability allows a malicious font server to send specially crafted glyph data. The fs_read_glyphs() function fails to properly validate the total size of the incoming data, leading to an overwrite of memory beyond the intended buffer. If the X server runs as a privileged user, this could result in privilege escalation, allowing an attacker to gain higher access. If the X server runs as an unprivileged user, it could lead to a denial of service, causing the system to crash.(CVE-2026-44950)

A flaw was found in the libXfont2 font-server client. A remote attacker, by operating a malicious font server, could exploit an out-of-bounds read/write vulnerability. This occurs because the client incorrectly handles font data, leading to an out-of-bounds memory access. This can lead to privilege escalation if the X server runs with root privileges, or a denial of service (crash) if it runs as an unprivileged user.(CVE-2026-59679)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:20.03-LTS-SP4
libXfont2

Package

Name
libXfont2
Purl
pkg:rpm/openEuler/libXfont2&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.4-3.oe2003sp4

Ecosystem specific 

{
    "aarch64": [
        "libXfont2-2.0.4-3.oe2003sp4.aarch64.rpm",
        "libXfont2-debuginfo-2.0.4-3.oe2003sp4.aarch64.rpm",
        "libXfont2-debugsource-2.0.4-3.oe2003sp4.aarch64.rpm",
        "libXfont2-devel-2.0.4-3.oe2003sp4.aarch64.rpm"
    ],
    "noarch": [
        "libXfont2-help-2.0.4-3.oe2003sp4.noarch.rpm"
    ],
    "src": [
        "libXfont2-2.0.4-3.oe2003sp4.src.rpm"
    ],
    "x86_64": [
        "libXfont2-2.0.4-3.oe2003sp4.x86_64.rpm",
        "libXfont2-debuginfo-2.0.4-3.oe2003sp4.x86_64.rpm",
        "libXfont2-debugsource-2.0.4-3.oe2003sp4.x86_64.rpm",
        "libXfont2-devel-2.0.4-3.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3466.json"
openEuler:22.03-LTS-SP4
libXfont2

Package

Name
libXfont2
Purl
pkg:rpm/openEuler/libXfont2&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.5-6.oe2203sp4

Ecosystem specific 

{
    "aarch64": [
        "libXfont2-2.0.5-6.oe2203sp4.aarch64.rpm",
        "libXfont2-debuginfo-2.0.5-6.oe2203sp4.aarch64.rpm",
        "libXfont2-debugsource-2.0.5-6.oe2203sp4.aarch64.rpm",
        "libXfont2-devel-2.0.5-6.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "libXfont2-help-2.0.5-6.oe2203sp4.noarch.rpm"
    ],
    "src": [
        "libXfont2-2.0.5-6.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "libXfont2-2.0.5-6.oe2203sp4.x86_64.rpm",
        "libXfont2-debuginfo-2.0.5-6.oe2203sp4.x86_64.rpm",
        "libXfont2-debugsource-2.0.5-6.oe2203sp4.x86_64.rpm",
        "libXfont2-devel-2.0.5-6.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3466.json"
openEuler:24.03-LTS-SP1
libXfont2

Package

Name
libXfont2
Purl
pkg:rpm/openEuler/libXfont2&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.6-4.oe2403sp1

Ecosystem specific 

{
    "aarch64": [
        "libXfont2-2.0.6-4.oe2403sp1.aarch64.rpm",
        "libXfont2-debuginfo-2.0.6-4.oe2403sp1.aarch64.rpm",
        "libXfont2-debugsource-2.0.6-4.oe2403sp1.aarch64.rpm",
        "libXfont2-devel-2.0.6-4.oe2403sp1.aarch64.rpm"
    ],
    "noarch": [
        "libXfont2-help-2.0.6-4.oe2403sp1.noarch.rpm"
    ],
    "src": [
        "libXfont2-2.0.6-4.oe2403sp1.src.rpm"
    ],
    "x86_64": [
        "libXfont2-2.0.6-4.oe2403sp1.x86_64.rpm",
        "libXfont2-debuginfo-2.0.6-4.oe2403sp1.x86_64.rpm",
        "libXfont2-debugsource-2.0.6-4.oe2403sp1.x86_64.rpm",
        "libXfont2-devel-2.0.6-4.oe2403sp1.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3466.json"
openEuler:24.03-LTS-SP3
libXfont2

Package

Name
libXfont2
Purl
pkg:rpm/openEuler/libXfont2&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.6-4.oe2403sp3

Ecosystem specific 

{
    "aarch64": [
        "libXfont2-2.0.6-4.oe2403sp3.aarch64.rpm",
        "libXfont2-debuginfo-2.0.6-4.oe2403sp3.aarch64.rpm",
        "libXfont2-debugsource-2.0.6-4.oe2403sp3.aarch64.rpm",
        "libXfont2-devel-2.0.6-4.oe2403sp3.aarch64.rpm"
    ],
    "noarch": [
        "libXfont2-help-2.0.6-4.oe2403sp3.noarch.rpm"
    ],
    "src": [
        "libXfont2-2.0.6-4.oe2403sp3.src.rpm"
    ],
    "x86_64": [
        "libXfont2-2.0.6-4.oe2403sp3.x86_64.rpm",
        "libXfont2-debuginfo-2.0.6-4.oe2403sp3.x86_64.rpm",
        "libXfont2-debugsource-2.0.6-4.oe2403sp3.x86_64.rpm",
        "libXfont2-devel-2.0.6-4.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3466.json"
openEuler:24.03-LTS-SP4
libXfont2

Package

Name
libXfont2
Purl
pkg:rpm/openEuler/libXfont2&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.6-4.oe2403sp4

Ecosystem specific 

{
    "aarch64": [
        "libXfont2-2.0.6-4.oe2403sp4.aarch64.rpm",
        "libXfont2-debuginfo-2.0.6-4.oe2403sp4.aarch64.rpm",
        "libXfont2-debugsource-2.0.6-4.oe2403sp4.aarch64.rpm",
        "libXfont2-devel-2.0.6-4.oe2403sp4.aarch64.rpm"
    ],
    "noarch": [
        "libXfont2-help-2.0.6-4.oe2403sp4.noarch.rpm"
    ],
    "src": [
        "libXfont2-2.0.6-4.oe2403sp4.src.rpm"
    ],
    "x86_64": [
        "libXfont2-2.0.6-4.oe2403sp4.x86_64.rpm",
        "libXfont2-debuginfo-2.0.6-4.oe2403sp4.x86_64.rpm",
        "libXfont2-debugsource-2.0.6-4.oe2403sp4.x86_64.rpm",
        "libXfont2-devel-2.0.6-4.oe2403sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3466.json"