CVE-2026-62377
Description
A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. A remote attacker could provide a specially crafted HEIF sequence. Processing this malicious file could lead to a reachable assertion or dereference an empty map, resulting in a crash of the application. This vulnerability can cause a Denial of Service (DoS).
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 processing untrusted HEIF or AVIF image files with applications linked against libheif. Restricting the source of HEIF/AVIF files to trusted origins can reduce the risk of exploitation.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.
Integrity,Confidentiality
Technical Impact: Execute Unauthorized Code or Commands; Read Memory; Modify Memory
In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.
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