Unity Linux 20.1070a Security Update: libXfont2 (UTSA-2026-141782)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-141782 advisory. fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slic...

Unity Linux 20.1070a Security Update: libXfont2 (UTSA-2026-141785)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-141785 advisory. fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that...

EulerOS 2.0 SP11 : libXfont2 (EulerOS-SA-2026-4334)

According to the versions of the libXfont2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in the libXfont2 font-server client. This heap buffer overflow vulnerability allows a malicious font server to send specially...

EulerOS 2.0 SP11 : libXfont2 (EulerOS-SA-2026-4243)

According to the versions of the libXfont2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in the libXfont2 font-server client. This heap buffer overflow vulnerability allows a malicious font server to send specially...

EulerOS 2.0 SP13 : libXfont2 (EulerOS-SA-2026-4149)

According to the versions of the libXfont2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties before...

MGASA-2026-0471 Updated libxfont2 package fixes security vulnerabilities

fsreadglyphs heap buffer overflow via cumulative glyph data overflow in libXfont2. CVE-2026-44950 fsreadglyphs heap OOB read/write via encoding array index mismatch in libXfont2. CVE-2026-59679...

Updated libxfont2 package fixes security vulnerabilities

fsreadglyphs heap buffer overflow via cumulative glyph data overflow in libXfont2. CVE-2026-44950 fsreadglyphs heap OOB read/write via encoding array index mismatch in libXfont2. CVE-2026-59679...

TencentOS Server 4: libXfont2 (TSSA-2026:1066)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1066 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

AZL-101730 CVE-2026-59679 affecting package libXfont2 for versions less than 2.0.9-1

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that array was allocated with a size derived from numextents in the separate FSQueryXExtents16 reply. The two CARD32 fields are never...

CVE-2026-44950

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

AZL-101733 CVE-2026-44950 affecting package libXfont2 for versions less than 2.0.9-1

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

CVE-2026-44950

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

EUVD-2026-75306

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

CVE-2026-44950 fs_read_glyphs() heap buffer overflow via cumulative glyph data overflow in libXfont2

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

CVE-2026-44950

CVE-2026-44950 is a heap buffer overflow in the libXfont2 font-server client (fs_read_glyphs() in src/fc/fserve.c). The function validates each glyph's source slice individually but never checks whether the cumulative destination offset exceeds the allocated buffer size. A malicious font server c...

CVE-2026-59679

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that array was allocated with a size derived from numextents in the separate FSQueryXExtents16 reply. The two CARD32 fields are never...

CVE-2026-59679 fs_read_glyphs() heap OOB read/write via encoding array index mismatch in libXfont2

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that array was allocated with a size derived from numextents in the separate FSQueryXExtents16 reply. The two CARD32 fields are never...

CVE-2026-44950: Heap-based Buffer Overflow

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

CVE-2026-44950: Heap-based Buffer Overflow

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice position, length lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the...

CVE-2026-59679: Out-of-bounds Write

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that array was allocated with a size derived from numextents in the separate FSQueryXExtents16 reply. The two CARD32 fields are never...