Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-014
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-11-07
FAQs regarding Amazon Linux ALAS/CVE Severity
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS). (CVE-2026-12912)
Denial of Service via large SamplesPerPixel tag (CVE-2026-36849)
An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the process_command_opts() function in tools/tiffcrop.c (CVE-2026-52490)
An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr conversion of a crafted TIFF image (CVE-2026-52492)
Affected Packages:
libtiff
Issue Correction:
Run dnf update libtiff --releasever 2027.0.20261012 or dnf update --advisory ALAS2027-2026-014 --releasever 2027.0.20261012 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2027 documentation
aarch64:
libtiff-debuginfo-4.7.2-1.amzn2027.aarch64
libtiff-static-4.7.2-1.amzn2027.aarch64
libtiff-tools-4.7.2-1.amzn2027.aarch64
libtiff-tools-debuginfo-4.7.2-1.amzn2027.aarch64
libtiff-4.7.2-1.amzn2027.aarch64
libtiff-debugsource-4.7.2-1.amzn2027.aarch64
libtiff-devel-4.7.2-1.amzn2027.aarch64
src:
libtiff-4.7.2-1.amzn2027.src
x86_64:
libtiff-4.7.2-1.amzn2027.x86_64
libtiff-static-4.7.2-1.amzn2027.x86_64
libtiff-debuginfo-4.7.2-1.amzn2027.x86_64
libtiff-devel-4.7.2-1.amzn2027.x86_64
libtiff-debugsource-4.7.2-1.amzn2027.x86_64
libtiff-tools-debuginfo-4.7.2-1.amzn2027.x86_64
libtiff-tools-4.7.2-1.amzn2027.x86_64