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Libass Project LibassBuffer Overflow

Risk 68
Severity
7.8
Buffer Overflow
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decodechars (called from decodefont and processtext) because the wrong integer data type is used for subtraction.

First published (updated )
CVE-2020-36430

Libass Project LibassLast updated 26 August 2025

Risk 77
Severity
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Last updated 26 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2020-24994

Libass Project LibassInteger Overflow

Risk 77
Severity
8.8
Integer Overflow
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

In libass 0.14.0, the assoutlineconstruct's call to outlinestroke causes a signed integer overflow.

1 / 2
Source: MITRE
First published (updated )
CVE-2020-26682

openSUSE LeapThe check_allocations function in libass/ass_shaper.c in libass before 0.13.4 allows remote attacker…

Risk 43
Severity
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

The checkallocations function in libass/assshaper.c in libass before 0.13.4 allows remote attackers to cause a denial of service (memory allocation failure) via unspecified vectors.

First published (updated )
CVE-2016-7972

Fedoraproject FedoraBuffer Overflow

Risk 43
Severity
7.5
Buffer Overflow
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Buffer overflow in the calccoeff function in libass/assblur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.

First published (updated )
CVE-2016-7970

redhat/libassThe wrap_lines_smart function in ass_render.c in libass before 0.13.4 allows remote attackers to cau…

Risk 45
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Libass released a new 0.13.4 version which fixes multiple issues. CVE-2016-7971 remains unfixed for now.

CVE-2016-7969 upstream patch:

https://github.com/libass/libass/pull/240/commits/b72b283b936a600c730e00875d7d067bded3fc26

CVE-2016-7970 upstream patch:

https://github.com/libass/libass/pull/240/commits/08e754612019ed84d1db0d1fc4f5798248decd75

CVE-2016-7972 upstream patch:

https://github.com/libass/libass/pull/240/commits/aa54e0b59200a994d50a346b5d7ac818ebcf2d4b

External References:

https://github.com/libass/libass/releases/tag/0.13.4

1 / 2
Source: Red Hat
First published (updated )
CVE-2016-7969

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