An update for libtiff is now available for openEuler-20.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2025-2091 Final 1.0 1.0 2025-08-29 Initial 2025-08-29 2025-08-29 openEuler SA Tool V1.0 2025-08-29 libtiff security update An update for libtiff is now available for openEuler-20.03-LTS-SP4 This provides support for the Tag Image File Format (TIFF), a widely used format for storing image data. The latest version of the TIFF specification is available on-line in several different formats.And contains command-line programs for manipulating TIFF format image files using the libtiff library. Security Fix(es): A vulnerability classified as problematic was found in libtiff 4.6.0 (Image Processing Software).The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.As an impact it is known to affect availability.It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. One of the maintainers explains, that "[t]his error only occurs if DEFER_STRILE_LOAD (defer-strile-load:BOOL=ON) or TIFFOpen( .. "rD") option is used."Applying the patch 6ba36f159fd396ad11bf6b7874554197736ecc8b is able to eliminate this problem. The bugfix is ready for download at gitlab.com.(CVE-2025-8534) A vulnerability was found in LibTIFF up to 4.5.1 (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).Impacted is confidentiality, integrity, and availability.Applying the patch 8a7a48d7a645992ca83062b3a1873c951661e2b3 is able to eliminate this problem. The bugfix is ready for download at gitlab.com.(CVE-2025-8851) An update for libtiff is now available for openEuler-20.03-LTS-SP4. openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Medium libtiff https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2091 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-8534 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-8851 https://nvd.nist.gov/vuln/detail/CVE-2025-8534 https://nvd.nist.gov/vuln/detail/CVE-2025-8851 openEuler-20.03-LTS-SP4 libtiff-4.3.0-29.oe2003sp4.aarch64.rpm libtiff-debuginfo-4.3.0-29.oe2003sp4.aarch64.rpm libtiff-debugsource-4.3.0-29.oe2003sp4.aarch64.rpm libtiff-devel-4.3.0-29.oe2003sp4.aarch64.rpm libtiff-4.3.0-29.oe2003sp4.src.rpm libtiff-4.3.0-29.oe2003sp4.x86_64.rpm libtiff-debuginfo-4.3.0-29.oe2003sp4.x86_64.rpm libtiff-debugsource-4.3.0-29.oe2003sp4.x86_64.rpm libtiff-devel-4.3.0-29.oe2003sp4.x86_64.rpm libtiff-help-4.3.0-29.oe2003sp4.noarch.rpm A vulnerability classified as problematic was found in libtiff 4.6.0 (Image Processing Software).The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.As an impact it is known to affect availability.It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. One of the maintainers explains, that "[t]his error only occurs if DEFER_STRILE_LOAD (defer-strile-load:BOOL=ON) or TIFFOpen( .. "rD") option is used."Applying the patch 6ba36f159fd396ad11bf6b7874554197736ecc8b is able to eliminate this problem. The bugfix is ready for download at gitlab.com. 2025-08-29 CVE-2025-8534 openEuler-20.03-LTS-SP4 Low 2.5 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L libtiff security update 2025-08-29 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2091 A vulnerability was found in LibTIFF up to 4.5.1 (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).Impacted is confidentiality, integrity, and availability.Applying the patch 8a7a48d7a645992ca83062b3a1873c951661e2b3 is able to eliminate this problem. The bugfix is ready for download at gitlab.com. 2025-08-29 CVE-2025-8851 openEuler-20.03-LTS-SP4 Medium 5.3 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L libtiff security update 2025-08-29 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2091