{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "* 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->frame 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 . 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", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu18.04els/advisories/2026/clsa-2026_1788170819.json" } ], "tracking": { "current_release_date": "2026-08-31T10:07:43Z", "generator": { "date": "2026-08-31T10:07:43Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1788170819", "initial_release_date": "2026-08-31T10:07:43Z", "revision_history": [ { "date": "2026-08-31T10:07:43Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "Fix CVE(s): CVE-2021-4156, CVE-2022-33065, CVE-2025-52194" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Ubuntu 18.04", "product": { "name": "Ubuntu 18.04", "product_id": "Ubuntu-18", "product_identification_helper": { "cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*" } } } ], "category": "product_family", "name": "Ubuntu" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product": { "name": "libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product_id": "libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/libsndfile1@1.0.28-4ubuntu0.18.04.2%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product": { "name": "sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product_id": "sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/sndfile-programs@1.0.28-4ubuntu0.18.04.2%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product": { "name": "libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product_id": "libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/libsndfile1-dev@1.0.28-4ubuntu0.18.04.2%2Btuxcare.els1?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" }, "product_reference": "libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" }, "product_reference": "sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" }, "product_reference": "libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2021-4156", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "description", "text": "An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2021-4156" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2027690", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2027690" }, { "category": "external", "summary": "https://github.com/libsndfile/libsndfile/issues/731", "url": "https://github.com/libsndfile/libsndfile/issues/731" }, { "category": "external", "summary": "https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab", "url": "https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html", "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2022/09/msg00036.html", "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00036.html" }, { "category": "external", "summary": "https://security.gentoo.org/glsa/202309-11", "url": "https://security.gentoo.org/glsa/202309-11" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2025/12/msg00013.html", "url": "https://lists.debian.org/debian-lts-announce/2025/12/msg00013.html" } ], "release_date": "2022-03-23T20:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-08-31T10:07:01.376833Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819", "product_ids": [ "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2025-52194", "cwe": { "id": "CWE-121", "name": "Stack-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "A buffer overflow vulnerability exists in libsndfile version 1.2.2 and potentially earlier versions when processing malformed IRCAM audio files. The vulnerability occurs in the ircam_read_header function at src/ircam.c:164 during sample rate processing, leading to memory corruption and potential code execution.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-52194" }, { "category": "external", "summary": "https://bushido-sec.com/index.php/2025/08/08/libsndfile-buffer-overflow/", "url": "https://bushido-sec.com/index.php/2025/08/08/libsndfile-buffer-overflow/" }, { "category": "external", "summary": "https://github.com/libsndfile", "url": "https://github.com/libsndfile" }, { "category": "external", "summary": "https://github.com/libsndfile/libsndfile/issues/1082", "url": "https://github.com/libsndfile/libsndfile/issues/1082" } ], "release_date": "2025-08-21T15:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-08-31T10:07:01.376833Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819", "product_ids": [ "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2022-33065", "cwe": { "id": "CWE-190", "name": "Integer Overflow or Wraparound" }, "notes": [ { "category": "description", "text": "Multiple signed integers overflow in function au_read_header in src/au.c and in functions mat4_open and mat4_read_header in src/mat4.c in Libsndfile, allows an attacker to cause Denial of Service or other unspecified impacts.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2022-33065" }, { "category": "external", "summary": "https://github.com/libsndfile/libsndfile/issues/789", "url": "https://github.com/libsndfile/libsndfile/issues/789" }, { "category": "external", "summary": "https://github.com/libsndfile/libsndfile/issues/833", "url": "https://github.com/libsndfile/libsndfile/issues/833" } ], "release_date": "2023-07-18T14:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-08-31T10:07:01.376833Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819", "product_ids": [ "Ubuntu-18:libsndfile1-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:libsndfile1-dev-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64", "Ubuntu-18:sndfile-programs-0:1.0.28-4ubuntu0.18.04.2+tuxcare.els1.amd64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788170819" } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }