{"id":"CLSA-2026-1788170819","summary":"Fix CVE(s): CVE-2021-4156, CVE-2022-33065, CVE-2025-52194","details":"   * SECURITY UPDATE: multiple signed integer overflows in the AU, MAT4/MAT5,\n     AVR, SDS, AIFF, IRCAM, RF64, PCM and IMA-ADPCM header parsers allow\n     denial of service via a crafted file (ELSCVE-171688)\n     - debian/patches/CVE-2022-33065/CVE-2022-33065-{1..8,11..13}.patch:\n       widen the overflowing data_end, blockwidth and sample-count\n       calculations to sf_count_t in src/au.c, src/mat4.c, src/mat5.c,\n       src/avr.c, src/sds.c, src/aiff.c, src/ircam.c, src/common.h,\n       src/common.c, src/pcm.c, src/rf64.c and src/ima_adpcm.c. Byte-identical\n       to Ubuntu's own patches as shipped in the public focal security source\n       1.0.28-7ubuntu0.3 (same upstream 1.0.28, same 13-patch prefix); the\n       bionic +esm1 artifact itself is Ubuntu Pro-gated. Note that Ubuntu's\n       CVE-2022-33065-13.patch is a squash of three upstream commits rather\n       than the single one its header names: 3970faeb (IMA ADPCM nibble\n       sizing) and 7e6cc7cb (stepindx initialisation) are prerequisites that\n       1.0.28 predates, alongside the cited 9f097e49 which carries the\n       CVE-2022-33065 fix proper; all three are credited in that patch's\n       provenance note.\n     - CVE-2022-33065\n   * SECURITY UPDATE: out-of-bounds read in the FLAC decoder when a frame\n     fails to decode and the stale frame pointer is reused (ELSCVE-171682)\n     - debian/patches/CVE-2021-4156.patch: NULL pflac-\u003eframe when\n       FLAC__stream_decoder_process_single() fails in flac_read_loop() in\n       src/flac.c. Byte-identical to Ubuntu's own patch as shipped in the\n       public focal security source 1.0.28-7ubuntu0.3; upstream commit\n       ced91d7b971be6173b604154c39279ce90ad87cc.\n     - CVE-2021-4156\n   * SECURITY UPDATE: undefined float-to-int conversion of the IRCAM header\n     sample rate on out-of-range or non-finite values (ELSCVE-171686)\n     - debian/patches/CVE-2025-52194.patch: convert the file-supplied sample\n       rate with lrintf() instead of a bare (int) cast in ircam_read_header()\n       in src/ircam.c, and include \u003cmath.h\u003e. Backport of upstream commit\n       7ff854d1e0bd9a751a9ff52ed980c62afced91fe, adapted because 1.0.28 has\n       no psf_lrintf() helper; src/mat4.c already uses lrint() for the same\n       purpose in this tree.\n     - CVE-2025-52194","modified":"2026-10-26T09:32:04.278067553Z","published":"2026-08-31T10:07:11Z","upstream":["CVE-2021-4156","CVE-2022-33065","CVE-2025-52194"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1788170819.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4156"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-33065"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-52194"}],"affected":[{"package":{"name":"libsndfile1","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libsndfile1?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.28-4ubuntu0.18.04.2+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788170819.json"}},{"package":{"name":"libsndfile1-dev","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libsndfile1-dev?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.28-4ubuntu0.18.04.2+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788170819.json"}},{"package":{"name":"sndfile-programs","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/sndfile-programs?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.28-4ubuntu0.18.04.2+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788170819.json"}}],"schema_version":"1.9.0"}