Threats Tagged 'cve-2026-4775'

This update for tiff fixes the following issues - CVE-2026-12912: heap-based buffer overflow when processing crafted PixarLog-compressed TIFF image (bsc#1269779). - CVE-2026-36849: denial of service when processing a a crafted TIFF file containing a large SamplesPerPixel tag value (bsc#1268434). Changes for tiff: - Update to 4.7.2: Software configuration changes: * cmake: Fix bundle identifiers to use reverse-DNS format * cmake: Fix and improve Apple framework build support * cmake: Use TurboJPEG CONFIG by default (issue #767) * cmake: changes related to 8-/12-bit modes * cmake: Replace CMath::CMath with direct link to avoid export. * Support for iOS-derived builds * Simplify cmake byte order version check * Add additional warnings, primarily floating precision conversions and integer arithmetic conversions * configure.ac: Require bootstrap with at least Autoconf 2.71. Bug fixes: * Handle negative TIFFReadFile results before state updates (issue #854) * tif_dirread.c: fix copy-paste bug in ChopUpSingleUncompressedStrip * tif_read.c: Fixed division by zero in TIFFStartStrip() (issue #777) * tif_dirwrite.c: add integer overflow checks to allocation size calculations * tif_print.c: add integer overflow checks to allocation size calculations * tif_write.c: fix OOB read and underflow in TIFFAppendToStrip copy loop * DumpModeSeek: add bounds check to prevent OOB pointer advance * TIFFGrowStrips: fix use-after-free on partial realloc failure. * Fix NULL dereference in _TIFFReserveLargeEnoughWriteBuffer() by validating the strip bytecount array before accessing it. * TIFFRGBAImage: avoid int overflows in put functions (issue #830) * tif_getimage: fix inconsistent fromskew handling in put16bitbwtile (issue #792) * tif_getimage: Widen pointer-offset arithmetic in tif_getimage * putcontig8bitYCbCr44tile: fix wrong fromskew computation (issue #798) * putcontig8bitYCbCr42tile: Reject invalid YCbCr subsampling when image dimensions are smaller than the subsampling block to prevent out-of-bounds writes. (issue #753) * TIFFFillStrip/Tile(): avoid excessive memory allocation (issue #831) * TIFFLinkDirectory() checks for IFD loops (issue #788) * Check result of _TIFFCheckRealloc to prevent memory leaks and segmentation fault when reallocation fails. * TIFFVTileSize64(): in YCbCr contig non upsampled mode, validate td_samplesperpixel==3 (issue #805) * TIFFReadDirEntryPersampleShort(): be tolerant to tags like SampleFormat not having 1 or SamplesPerPixel values (https://github.com/OSGeo/gdal/issues/13465) * tif_getimage: reject tile widths that would overflow toskew (issue #808) * Fix integer overflow in _TIFFPartialReadStripArray on 32-bit. * TIFFAppendToStrip(): add some checks to avoid null-pointer-dereferencing (issue #777). * _TIFFGetStrileOffsetOrByteCountValue(): fix potential crash on corrupted files when file opened in 'O' mode (https://issues.oss-fuzz.com/issues/471328917) * TIFFReadDirectory(): re-set TIFF_LAZYSTRILELOAD if file opened in 'O' mode * _TIFFMergeFields(): avoid NULL ptr dereference (issue #755). * Check td_stripbytecount_p and td_stripoffset_p for NULL pointer before (re-)writing to file. (issue #749) * JPEGDecodeRaw: initialize output buffer to avoid returning uninitialized memory (issue #892) * JPEG decompressor: initialize output buffer when JPEG image is smaller than strile dimension to avoid heap memory disclosure (issue #826) * JPEG: fix generation of tiled 12-bit JPEG compressed files with libjpeg-turbo 3.0.3 (issue #773) * JPEGDecode(): fix memory leak in error code path (https://issues.oss-fuzz.com/issues/471945501) * tif_jpeg: reject mismatched JPEG data precision to avoid write overflow * Fix signed left-shift UB in LogLuv RANDITHER encoding (issue #850) * PixarLog: error out on invalid ABGR output buffer sizes. * PixarLog: complete ABGR bounds check for multi-row strip decoding. * PixarLog: fix undoing horizontal differencing when SamplesPerPixel != 3 and 4 (issue #789). * PixarLog codec: fix potential integer overflow/out-of-bounds access (issue #797) * TIFFAdvanceDirectory(): avoid potential read heap-buffer-overflow in mmap code path on 32 bit builds (https://issues.oss-fuzz.com/issues/506737072) * OJPEG: fix integer overflow in subsampling buffer allocation. * OJPEG: fix nullptr deref when changing compression method from OJPEG to something else (issue #795). * OJPEG fix potential integer overflow/out-of-bounds access (issue #796). * ojpeg: prevent EOF infinite loop (fixes commit 2a3d55b) * fix null pointer deference in issue #782. * fix stack-overflow in issue #784. Other changes: * Change EXIF and GPS tag type from IFD8 to LONG8 per EXIF-specification (issue #739). * Harden integer size and offset calculations (issue #897) * TIFFComputeTile/TIFFComputeStrip: use overflow-checked multiplication * Move widening casts inside multiplication scope. * Lots of compiler warning fixes related to enabling more warning flags

Red Hat® AI Inference Server

Red Hat® AI Inference Server

Red Hat® AI Inference Server Model Optimization Tools

A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.