https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 28 Sep 2026 12:22:29 +0000 https://vulnerability.circl.lu/vuln/fkie_cve-2026-44638 <p>libsixel is a SIXEL encoder/decoder implementation derived from kmiya&#39;s sixel. From to 1.8.7-r1, a wrong NULL check after an allocation call in sixel_decode_raw and sixel_decode causes a NULL pointer dereference whenever the allocation fails. The check tests the address of the output parameter (always non-NULL) instead of the value the malloc returned. On allocation failure, the function continues and writes through a NULL pointer, crashing the process. This is a denial of service against any caller of these public APIs that hits a low-memory condition. This vulnerability is fixed in 1.8.7-r2.</p> <p>libsixel is a SIXEL encoder/decoder implementation derived from kmiya&#39;s sixel. From to 1.8.7-r1, a wrong NULL check after an allocation call in sixel_decode_raw and sixel_decode causes a NULL pointer dereference whenever the allocation fails. The check tests the address of the output parameter (always non-NULL) instead of the value the malloc returned. On allocation failure, the function continues and writes through a NULL pointer, crashing the process. This is a denial of service against any caller of these public APIs that hits a low-memory condition. This vulnerability is fixed in 1.8.7-r2.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-44638 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-44638 <p><strong>Affected:</strong> Ubuntu:16.04:LTS: libsixel, Ubuntu:18.04:LTS: libsixel, Ubuntu:20.04:LTS: libsixel, Ubuntu:22.04:LTS: libsixel, Ubuntu:24.04:LTS: libsixel, Ubuntu:25.10: libsixel, Ubuntu:26.04:LTS: libsixel</p> <p>libsixel is a SIXEL encoder/decoder implementation derived from kmiya&#39;s sixel. From to 1.8.7-r1, a wrong NULL check after an allocation call in sixel_decode_raw and sixel_decode causes a NULL pointer dereference whenever the allocation fails. The check tests the address of the output parameter (always non-NULL) instead of the value the malloc returned. On allocation failure, the function continues and writes through a NULL pointer, crashing the process. This is a denial of service against any caller of these public APIs that hits a low-memory condition. This vulnerability is fixed in 1.8.7-r2.</p> <p><strong>Affected:</strong> Ubuntu:16.04:LTS: libsixel, Ubuntu:18.04:LTS: libsixel, Ubuntu:20.04:LTS: libsixel, Ubuntu:22.04:LTS: libsixel, Ubuntu:24.04:LTS: libsixel, Ubuntu:25.10: libsixel, Ubuntu:26.04:LTS: libsixel</p> <p>libsixel is a SIXEL encoder/decoder implementation derived from kmiya&#39;s sixel. From to 1.8.7-r1, a wrong NULL check after an allocation call in sixel_decode_raw and sixel_decode causes a NULL pointer dereference whenever the allocation fails. The check tests the address of the output parameter (always non-NULL) instead of the value the malloc returned. On allocation failure, the function continues and writes through a NULL pointer, crashing the process. This is a denial of service against any caller of these public APIs that hits a low-memory condition. This vulnerability is fixed in 1.8.7-r2.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-44638