CVE-2024-11403

A flaw was found in the libjxl package. The JPEG decoder used by the JPEG XL encoder when doing JPEG recompression, such as using JxlEncoderAddJPEGFrame on untrusted input, does not properly check bounds in the presence of incomplete codes. This could lead to an out-of-bounds write. In jpegli, which is released as part of the same project, the same vulnerability is present. However, the relevant buffer is part of a bigger structure and the code makes no assumptions on the values that could be overwritten. This issue could cause jpegli to read uninitialised memory or addresses of functions.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.