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oesa-2026-3799
Vulnerability from osv_openeuler
Published
2026-09-14 16:34
Modified
2026-09-14 16:34
Summary
ffmpeg security update
Details

FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.

Security Fix(es):

A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond the bounds of a heap-allocated buffer when processing crafted TDSC cursor data. A remote attacker could exploit this by supplying a specially crafted video file, potentially leading to a denial of service or arbitrary code execution.(CVE-2026-18393)

A flaw was found in FFmpeg. An integer overflow in the libavfilter/vf_scale.c component allows attackers to cause a Denial of Service (DoS) by supplying a specially crafted video file. This can lead to the application becoming unresponsive or crashing.(CVE-2026-38343)

A flaw was found in FFmpeg. This vulnerability involves a NULL pointer dereference within the get_min_buffer_size function when processing specially crafted video files. An attacker could exploit this by providing a malicious video file, leading to a Denial of Service (DoS). A Denial of Service attack prevents legitimate users from accessing a service or resource.(CVE-2026-38344)

A flaw was found in FFmpeg. An integer overflow vulnerability in the yuv2planeX_8_c() function allows a remote attacker to cause a Denial of Service (DoS) by supplying a specially crafted video file. This can lead to the application becoming unresponsive or crashing, impacting system availability.(CVE-2026-38346)

A flaw was found in FFmpeg. A heap overflow vulnerability exists in the ff_sws_alphablendaway function. This flaw allows attackers to cause a Denial of Service (DoS) by providing a specially crafted input. Successful exploitation could lead to the application becoming unresponsive or crashing.(CVE-2026-38347)

A flaw was found in FFmpeg, specifically within the libswscale/utils.c component. An integer overflow vulnerability allows a remote attacker to cause a Denial of Service (DoS) by supplying a specially crafted image file. This could lead to the application becoming unresponsive or crashing.(CVE-2026-38348)

A flaw was found in FFmpeg. An integer overflow vulnerability in the hScale16To19_c() function allows a remote attacker to cause a Denial of Service (DoS) by supplying a specially crafted image file. This can lead to the application becoming unresponsive or crashing, preventing legitimate users from accessing the service.(CVE-2026-38349)

FFmpeg versions from 0.5 up to, but not including, 9.0 contain a signed integer overflow vulnerability in the DVB subtitle parser in libavcodec/dvbsub_parser.c that allows attackers to trigger a heap buffer overflow by supplying a crafted WTV file. The overflow causes the bounds-check guard expression to wrap to INT_MIN, bypassing the PARSE_BUF_SIZE comparison and invoking memcpy() with attacker-controlled data into a heap buffer, resulting in an out-of-bounds heap write and potential memory corruption or code execution.(CVE-2026-70628)

FFmpeg versions from 0.5 up to, but not including, 9.0 contain an uninitialized heap memory disclosure vulnerability in the native TIFF decoder in libavcodec/tiff.c. An attacker who can cause FFmpeg to decode a crafted TIFF file can supply a valid Deflate-compressed strip that terminates successfully after producing fewer bytes than the declared strip requires. The tiff_unpack_zlib() function allocates a heap buffer sized for the full declared strip but copies all declared rows via memcpy() regardless of how many bytes zlib actually decompressed, causing unwritten bytes that can contain stale data from prior heap allocations to be incorporated into decoded image output and potentially exposing sensitive data in persistent services.(CVE-2026-70631)

FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.(CVE-2026-70632)

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "ffmpeg-6.1.1-49.oe2403sp4.aarch64.rpm",
          "ffmpeg-debuginfo-6.1.1-49.oe2403sp4.aarch64.rpm",
          "ffmpeg-debugsource-6.1.1-49.oe2403sp4.aarch64.rpm",
          "ffmpeg-devel-6.1.1-49.oe2403sp4.aarch64.rpm",
          "ffmpeg-libs-6.1.1-49.oe2403sp4.aarch64.rpm",
          "libavdevice-6.1.1-49.oe2403sp4.aarch64.rpm"
        ],
        "src": [
          "ffmpeg-6.1.1-49.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "ffmpeg-6.1.1-49.oe2403sp4.x86_64.rpm",
          "ffmpeg-debuginfo-6.1.1-49.oe2403sp4.x86_64.rpm",
          "ffmpeg-debugsource-6.1.1-49.oe2403sp4.x86_64.rpm",
          "ffmpeg-devel-6.1.1-49.oe2403sp4.x86_64.rpm",
          "ffmpeg-libs-6.1.1-49.oe2403sp4.x86_64.rpm",
          "libavdevice-6.1.1-49.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "ffmpeg",
        "purl": "pkg:rpm/openEuler/ffmpeg\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.1-49.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond the bounds of a heap-allocated buffer when processing crafted TDSC cursor data. A remote attacker could exploit this by supplying a specially crafted video file, potentially leading to a denial of service or arbitrary code execution.(CVE-2026-18393)\n\nA flaw was found in FFmpeg. An integer overflow in the `libavfilter/vf_scale.c` component allows attackers to cause a Denial of Service (DoS) by supplying a specially crafted video file. This can lead to the application becoming unresponsive or crashing.(CVE-2026-38343)\n\nA flaw was found in FFmpeg. This vulnerability involves a NULL pointer dereference within the `get_min_buffer_size` function when processing specially crafted video files. An attacker could exploit this by providing a malicious video file, leading to a Denial of Service (DoS). A Denial of Service attack prevents legitimate users from accessing a service or resource.(CVE-2026-38344)\n\nA flaw was found in FFmpeg. An integer overflow vulnerability in the `yuv2planeX_8_c()` function allows a remote attacker to cause a Denial of Service (DoS) by supplying a specially crafted video file. This can lead to the application becoming unresponsive or crashing, impacting system availability.(CVE-2026-38346)\n\nA flaw was found in FFmpeg. A heap overflow vulnerability exists in the `ff_sws_alphablendaway` function. This flaw allows attackers to cause a Denial of Service (DoS) by providing a specially crafted input. Successful exploitation could lead to the application becoming unresponsive or crashing.(CVE-2026-38347)\n\nA flaw was found in FFmpeg, specifically within the libswscale/utils.c component. An integer overflow vulnerability allows a remote attacker to cause a Denial of Service (DoS) by supplying a specially crafted image file. This could lead to the application becoming unresponsive or crashing.(CVE-2026-38348)\n\nA flaw was found in FFmpeg. An integer overflow vulnerability in the `hScale16To19_c()` function allows a remote attacker to cause a Denial of Service (DoS) by supplying a specially crafted image file. This can lead to the application becoming unresponsive or crashing, preventing legitimate users from accessing the service.(CVE-2026-38349)\n\nFFmpeg versions from 0.5 up to, but not including, 9.0 contain a signed integer overflow vulnerability in the DVB subtitle parser in libavcodec/dvbsub_parser.c that allows attackers to trigger a heap buffer overflow by supplying a crafted WTV file. The overflow causes the bounds-check guard expression to wrap to INT_MIN, bypassing the PARSE_BUF_SIZE comparison and invoking memcpy() with attacker-controlled data into a heap buffer, resulting in an out-of-bounds heap write and potential memory corruption or code execution.(CVE-2026-70628)\n\nFFmpeg versions from 0.5 up to, but not including, 9.0 contain an uninitialized heap memory disclosure vulnerability in the native TIFF decoder in libavcodec/tiff.c. An attacker who can cause FFmpeg to decode a crafted TIFF file can supply a valid Deflate-compressed strip that terminates successfully after producing fewer bytes than the declared strip requires. The tiff_unpack_zlib() function allocates a heap buffer sized for the full declared strip but copies all declared rows via memcpy() regardless of how many bytes zlib actually decompressed, causing unwritten bytes that can contain stale data from prior heap allocations to be incorporated into decoded image output and potentially exposing sensitive data in persistent services.(CVE-2026-70631)\n\nFFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.(CVE-2026-70632)",
  "id": "OESA-2026-3799",
  "modified": "2026-09-14T16:34:29Z",
  "published": "2026-09-14T16:34:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3799"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18393"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38343"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38344"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38346"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38347"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38348"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-38349"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70628"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70631"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70632"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ffmpeg security update",
  "upstream": [
    "CVE-2026-18393",
    "CVE-2026-38343",
    "CVE-2026-38344",
    "CVE-2026-38346",
    "CVE-2026-38347",
    "CVE-2026-38348",
    "CVE-2026-38349",
    "CVE-2026-70628",
    "CVE-2026-70631",
    "CVE-2026-70632"
  ]
}



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