SB2026040888 - Fedora 45 update for usd
Published: April 8, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2026-34378)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow in generic_unpack() when parsing crafted EXR files with a negative dataWindow.min.x value. A remote attacker can supply a specially crafted EXR file to cause a denial of service.
User interaction is required to open or process the crafted EXR file.
2) Integer overflow (CVE-ID: CVE-2026-34380)
The vulnerability allows a remote attacker to cause a denial of service and modify memory.
The vulnerability exists due to integer overflow or wraparound in undo_pxr24_impl() in src/lib/OpenEXRCore/internal_pxr24.c when parsing a crafted PXR24-compressed EXR file. A remote attacker can supply a specially crafted EXR file to cause a denial of service and modify memory.
User interaction is required to open or process the crafted file, and exploitation requires a FLOAT channel using PXR24 compression.
3) Integer overflow (CVE-ID: CVE-2026-34588)
The vulnerability allows a remote attacker to read and write out-of-bounds memory.
The vulnerability exists due to integer overflow in internal_exr_undo_piz() in the PIZ decoder when parsing a crafted EXR file. A remote attacker can supply a specially crafted EXR file to read and write out-of-bounds memory.
The issue occurs during PIZ decompression because signed 32-bit arithmetic can wrap while advancing the working wavelet pointer, causing the next channel to decode from an incorrect address.
4) Integer overflow (CVE-ID: CVE-2026-34589)
The vulnerability allows a remote attacker to execute arbitrary code or cause a denial of service.
The vulnerability exists due to integer overflow leading to an out-of-bounds write in the DWA lossy decoder when parsing a crafted scanline DWAA file. A remote attacker can supply a specially crafted file to execute arbitrary code or cause a denial of service.
User interaction is required to open or process the crafted file.
5) Type conversion (CVE-ID: CVE-2026-34379)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to incorrect type conversion or cast in LossyDctDecoder_execute() when decoding a DWA- or DWAB-compressed EXR file containing a FLOAT-type channel. A remote attacker can supply a specially crafted EXR file to cause a denial of service.
User interaction is required to open or process the crafted file.
Remediation
Install update from vendor's website.