A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).

The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8750-1 advisory.

    Seung Min Shin discovered that FFmpeg did not correctly handle certain memory operations. If a user or     automated system were tricked into opening a specially crafted file, an attacker could cause a denial of     service. (CVE-2026-12706)

    Xinghang Lv discovered that FFmpeg did not correctly handle certain memory operations. If a user or     automated system were tricked into opening a specially crafted file, an attacker could cause a denial of     service. (CVE-2026-30999)

    It was discovered that FFmpeg did not correctly handle certain memory operations. If a user or automated     system were tricked into opening a specially crafted file, an attacker could cause a denial of service.
    (CVE-2026-58049)

    Adrian Junge discovered that FFmpeg did not correctly handle certain memory operations. If a user or     automated system were tricked into opening a specially crafted file, an attacker could leak sensitive     information. (CVE-2026-70629, CVE-2026-70630, CVE-2026-70631)

    Ori Hollander discovered that FFmpeg did not correctly handle certain memory operations. If a user or     automated system were tricked into opening a specially crafted file, an attacker could possibly cause a     denial of service or execute arbitrary code. (CVE-2026-8461)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3542-1 advisory.

    Update to release 4.4.8.

    - CVE-2026-8461: out-of-bounds write in the MagicYUV decoder can lead to denial of service or remote code     execution       (bsc#1269490).
    - CVE-2026-12706: heap use-after-free read in the RASC video decoder can lead to denial of service     (bsc#1268595).
    - CVE-2026-64830: heap buffer overflow in the VobSub subtitle demuxer can lead to arbitrary code execution       (bsc#1272752).
    - CVE-2026-64832: double-free in the NVIDIA NVDEC hardware decoder can lead to can lead to memory     corruption       (bsc#1272754).
    - CVE-2026-64835: out-of-bounds memory access in the ADX audio decoder can lead to information disclosure     and memory       corruption (bsc#1272758).
    - CVE-2026-66038: exposure of uninitialized heap memory by the LCL/ZLIB video decoder can lead to     sensitive information       disclosure (bsc#1272768).
    - CVE-2026-66039: signed integer overflow in the MACE6 audio decoder can lead to heap corruption and     arbitrary code       execution (bsc#1272765).

    Other updates and bugfixes:

    - Release 4.4.8
      * Various bug fixes to codecs
      * avcodec/magicyuv: Fix 1 line MEDIAN slices
      * avcodec/magicyuv: Expand the s->interlaced slice-height sanity check
      * avcodec/magicyuv: reject slice_height misaligned with chroma vshift

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3529-1 advisory.

    Update to release 4.4.8.

    - CVE-2026-8461: out-of-bounds write in the MagicYUV decoder can lead to denial of service or remote code     execution       (bsc#1269490).
    - CVE-2026-12706: heap use-after-free read in the RASC video decoder can lead to denial of service     (bsc#1268595).
    - CVE-2026-64830: heap buffer overflow in the VobSub subtitle demuxer can lead to arbitrary code execution       (bsc#1272752).
    - CVE-2026-64832: double-free in the NVIDIA NVDEC hardware decoder can lead to can lead to memory     corruption       (bsc#1272754).
    - CVE-2026-64835: out-of-bounds memory access in the ADX audio decoder can lead to information disclosure     and memory       corruption (bsc#1272758).
    - CVE-2026-66038: exposure of uninitialized heap memory by the LCL/ZLIB video decoder can lead to     sensitive information       disclosure (bsc#1272768).
    - CVE-2026-66039: signed integer overflow in the MACE6 audio decoder can lead to heap corruption and     arbitrary code       execution (bsc#1272765).

    Other updates and bugfixes:

    - Release 4.4.8
      * Various bug fixes to codecs
      * avcodec/magicyuv: Fix 1 line MEDIAN slices
      * avcodec/magicyuv: Expand the s->interlaced slice-height sanity check
      * avcodec/magicyuv: reject slice_height misaligned with chroma vshift

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function     initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer     during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a     specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file,     the decoder reads from freed heap memory, which could lead to a denial of service (crash).
    (CVE-2026-12706)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
345735	Ubuntu 20.04 LTS / 22.04 LTS : FFmpeg vulnerabilities (USN-8750-1)	Nessus	Ubuntu Local Security Checks	Local	high
334789	SUSE SLED15: ffmpeg-4 / ffmpeg-4-libavcodec-devel / ffmpeg-4-libavdevice-devel / etc (SUSE-SU-2026:3542-1)	Nessus	SuSE Local Security Checks	Local	high
333552	SUSE SLES15: libavcodec58_134 / libavformat58_76 / libavutil56_70 / etc (SUSE-SU-2026:3529-1)	Nessus	SuSE Local Security Checks	Local	high
321824	Linux Distros Unpatched Vulnerability : CVE-2026-12706	Nessus	Misc.	Local	medium

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CVE-2026-12706

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