libjxl is the JPEG XL image format reference implementation.
libjxl contains an unecessary assertion in jxl::LowMemoryRenderPipeline::Init.
An attacker can cause a denial of service of the libjxl process via a crafted input file.
There is no known workaround at this time.
All users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libjxl-0.7.0_pre20220825"