CVE-2026-18393

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 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 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 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)…

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. This vulnerability allows unexpected additional CPU load and storage consumption, potentially leading to degraded performance or denial of service via the demuxing of arbitrary data as XBIN-formatted data without proper format validation.(CVE-2023-6604)

Out of bounds read in FFmpeg in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted video file. (Chromium security severity: Medium)(CVE-2026-13858)

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)

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.

These are all security issues fixed in the ffmpeg-8-8.1.2-5.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the ffmpeg-9-libavcodec-devel-9.0.1-6.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the ffmpeg-4-4.4.8-6.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the ffmpeg-7-7.1.5-4.1 package on the GA media of openSUSE Tumbleweed.

This update for ffmpeg fixes the following issues:

• CVE-2023-6602: HLS Force TTY Demuxer (bsc#1220546).
• CVE-2023-6604: HLS XBIN Demuxer DoS Amplification (bsc#1220549).
• CVE-2024-35367: FFmpeg n6.1.1 has an Out-of-bounds Read via libavcodec/ppc/vp8dsp_altivec.c, static const vec_s8 h_subpel_filters_outer (bsc#1234029).
• CVE-2026-18393: Heap buffer overflow in tdsc_load_cursor() via CUR_FMT_MONO cursor (bsc#1277377).
• CVE-2026-38344: A NULL pointer dereference in the get_min_buffer_size function (/libswscale/slice.c) of FFmpeg N-122528-gdd2976b9e1 allows attackers to cause a Denial of Service (DoS) via supplying a crafted video file (bsc#1277309).
• CVE-2026-38345: FFmpeg: Denial of Service via division-by-zero vulnerability in ff_sws_init_single_context function (bsc#1277376).
• CVE-2026-38346: FFmpeg: Denial of Service via crafted video file due to integer overflow (bsc#1277375).
• CVE-2026-38347: FFmpeg: Heap overflow vulnerability leads to Denial of Service (bsc#1277373).
• CVE-2026-38348: FFmpeg: Denial of Service via crafted image file due to integer overflow (bsc#1277368).
• CVE-2026-38349: FFmpeg: Denial of Service via crafted image file due to integer overflow (bsc#1277369).
• CVE-2026-38350: FFmpeg: Integer overflow leads to Denial of Service (bsc#1277370).
• CVE-2026-52296: out-of-bounds read due to missing required padding in WMA extradata allocation paths (bsc#1280752).
• CVE-2026-65705: vf_floodfill Out-of-Bounds Write via filter_frame() (bsc#1272761).
• CVE-2026-66036: Heap Out-of-Bounds Write in vf_hqdn3d Filter (bsc#1272763).
• CVE-2026-70628: signed integer underflows during subtitle buffer checks can cause heap buffer overflows (bsc#1274268).
• CVE-2026-70629: unvalidated decompressed frame sizes in video decoders can cause uninitialized heap memory reads (bsc#1274270).
• CVE-2026-70630: unvalidated decompression sizes in Screenpresso frame decoding can cause uninitialized heap memory reads (bsc#1274282).
• CVE-2026-70631: unvalidated decompression sizes in TIFF strip decoding can cause uninitialized heap memory reads (bsc#1274287).
• CVE-2026-70632: unenforced frame dimensions in CineForm HD decoding can cause heap-based out-of-bounds writes (bsc#1274289).
• CVE-2026-75141: heap buffer overflow in the hvcC box writer (bsc#1276407).
• CVE-2026-75142: stack buffer overflow in the MPEG-PS muxer (bsc#1276408).
• CVE-2026-75144: heap buffer overflow in the VC-2/Dirac RTP packetizer (bsc#1276410).
• CVE-2026-75146: out-of-bounds read in the DASH demuxer (bsc#1276412).
• CVE-2026-90815: out-of-bounds read in the convolution video filter when processing videos with dimensions smaller than the convolution kernel size (bsc#1280754).
• CVE-2026-90816: CPU exhaustion due to missing validations in the parse_playlist() function when processing a crafted HLS playlist (bsc#1280755).