CVE-2026-62291
Description
A flaw was found in libheif, a library for decoding and encoding HEIF and AVIF image formats. A remote attacker could exploit this vulnerability by providing a specially crafted image sequence with mismatched auxiliary alpha dimensions. During the image processing workflow, this could lead to attacker-controlled heap corruption. This critical issue potentially allows for arbitrary code execution or denial of service.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
To mitigate this issue, avoid opening or processing untrusted HEIF and AVIF image files with applications that use the libheif library. This operational control reduces the risk of triggering the heap corruption vulnerability.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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