GHSA-FHP4-PR5J-46M5 Muhammara has a NULL pointer dereference in LZWDecode filter when DecodeParms omits EarlyChange key

Summary A NULL pointer dereference vulnerability exists in PDFParser::CreateFilterForStream when processing a PDF stream with /Filter /LZWDecode and a /DecodeParms dictionary that does not contain the EarlyChange key. This causes an access violation 0xC0000005 and crashes the process. Affected...

Uncontrolled Memory Allocation

pypdf is vulnerable to uncontrolled memory allocation. The vulnerability is due to improper handling of LZWDecode streams, which allows an attacker to craft a malicious PDF that causes excessive memory consumption up to 1 GB per stream during content parsing...

UBUNTU-CVE-2025-66019

pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patch...

CVE-2025-66019 pypdf manipulated LZWDecode streams can exhaust RAM

pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patch...

pypdf's LZWDecode streams be manipulated to exhaust RAM

Impact An attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This is a follow up to GHSA-jfx9-29x2-rv3j to align the default limit with the one for zlib. Patche...

DEBIAN-CVE-2025-62708

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3...

CVE-2025-62708 pypdf manipulated LZWDecode streams can exhaust RAM

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3...

CVE-2025-62708

pypdf (Python PDF library) prior to version 6.1.3 is affected by CVE-2025-62708: an attacker can craft a PDF that triggers large memory usage when parsing a page content stream using the LZWDecode filter. The issue has been fixed in pypdf 6.1.3. This is documented in the CVE entry and corroborate...

CVE-2025-62708 pypdf manipulated LZWDecode streams can exhaust RAM

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3...

CVE-2025-62708

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3...

Unity Linux 20.1070e Security Update: libtiff (UTSA-2025-680618)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-680618 advisory. LibTIFF master branch has an out-of-bounds read in LZWDecode in libtiff/tiflzw.c:624, allowing attackers to cause a denial-of-service via a crafted tiff file. For...

The vulnerability of the LZWDecode function in the libtiff/tif_lzw.c component of the LibTIFF library, which allows a hacker to cause a service failure.

The vulnerability of the LZWDecode function in the libtiff/tiflzw.c component of the LibTIFF library is related to reading data beyond the allowable buffer limits. Exploiting this vulnerability could allow a malicious actor to cause service interruptions through a specially created TIF file...

libtiff: null pointer deference in LZWDecode() in libtiff/tif_lzw.c

A NULL pointer dereference flaw was found in Libtiff's LZWDecode function in the libtiff/tiflzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or...

Medium: libtiff

Issue Overview: A NULL pointer dereference flaw was found in Libtiff's LZWDecode function in the libtiff/tiflzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a...

SUSE CVE-2023-2731

A NULL pointer dereference flaw was found in Libtiff's LZWDecode function in the libtiff/tiflzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or...

UBUNTU-CVE-2023-2731

A NULL pointer dereference flaw was found in Libtiff's LZWDecode function in the libtiff/tiflzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or...

LibTIFF 代码问题漏洞

LibTIFF is a library for reading and writing TIFF Tagged Image File Format files. The library contains some command line tools for working with TIFF files. A denial of service vulnerability exists in LibTIFF, which stems from a NULL pointer dereference issue found in the LZWDecode function, and c...

DEBIAN-CVE-2022-1622

LibTIFF master branch has an out-of-bounds read in LZWDecode in libtiff/tiflzw.c:619, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit b4e79bfa...

AZL-9734 CVE-2022-1623 affecting package libtiff for versions less than 4.4.0-1

LibTIFF master branch has an out-of-bounds read in LZWDecode in libtiff/tiflzw.c:624, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit b4e79bfa...

libtiff: heap-based buffer overflow in tif_lzw.c:LZWDecodeCompat() allows for denial of service

In LibTIFF 4.0.9, a heap-based buffer overflow occurs in the function LZWDecodeCompat in tiflzw.c via a crafted TIFF file, as demonstrated by tiff2ps...