CVE-2023-2804 (https://github.com/libjpeg-turbo/libjpeg-turbo/issues/668#issuecomment-1492586118): A heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrgext.c file. The vulnerability can only be exploited with 12-bit data precision for which the range of the sample data type exceeds the valid sample range, hence, an attacker could craft a 12-bit lossless JPEG image that contains out-of-range 12-bit samples. An application attempting to decompress such image using merged upsampling would lead to segmentation fault or buffer overflows, causing an application to crash. Patched in main: https://github.com/libjpeg-turbo/libjpeg-turbo/commit/9f756bc67a84d4566bf74a0c2432aa55da404021
I don't get why, but we don't seem to have jdlossls.c in our /var/tmp/portage/media-libs/libjpeg-turbo-2.1.5.1-r1/work/libjpeg-turbo-2.1.5.1. Maybe I'm too tired :)
The 3.0.0 release notes mention this, but it's currently unkw'd because of test failures: commit 626886cfd7f73d2440495ac1b8613b0eff27dbfa Author: Sam James <sam@gentoo.org> Date: Mon Jul 3 21:38:15 2023 +0100 media-libs/libjpeg-turbo: add 3.0.0 (unkeyworded) Unkeyworded because of test failures. Signed-off-by: Sam James <sam@gentoo.org>
