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    CVE-2015-6761

    The update_dimensions function in libavcodec/vp8.c in FFmpeg through 2.8.1, as used in Google Chrome before 46.0.2490.71 and other products, relies on a coefficient-partition count during multi-threaded operation, which allows remote attackers to cause a denial of service (race condition and memory corruption) or possibly have unspecified other impact via a crafted WebM file.

    Published:Oct 13, 2015
    Last Modified:Apr 12, 2025
    EPS:Oct 15, 2015
    EPSS Score:0.01459
    CVSS Score:6.8

    Affected Products

    Vendor
    Ffmpeg
    Product
    Ffmpeg
    Vendor
    Google
    Product
    Chrome
    Vendor
    Redhat
    Product
    Rhel Extras

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-52295 (CVSS 6.2) — Buffer Overflow vulnerability in Ffmpeg v.7.0 and after allows an attacker to cause a denial of service via th…
    CVE-2026-18393 (CVSS 5.4) — A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond the bounds of a heap-allocated buffe…
    CVE-2026-38346 (CVSS 7.5) — An integer overflow in the yuv2planeX_8_c() function (libswscale/output.c) of FFmpeg N-122528-gdd2976b9e1 allo…
    CVE-2026-38348 (CVSS 7.5) — An integer overflow in the libswscale/utils.c component of FFmpeg N-122528-gdd2976b9e1 allows attackers to cau…
    CVE-2026-38350 (CVSS 7.5) — An integer overflow in the target_sws_fuzzer() function (libswscale/output.c) of FFmpeg N-122528-gdd2976b9e1 a…
    CVE-2026-38345 (CVSS 6.5) — A Division-by-Zero vulnerability in the ff_sws_init_single_context function (/libswscale/utils.c) of FFmpeg N-…
    CVE-2026-38347 (CVSS 7.5) — A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 72…
    CVE-2026-38349 (CVSS 7.5) — An integer overflow in the hScale16To19_c() function (libswscale/output.c) of FFmpeg N-122528-gdd2976b9e1 allo…
    CVE-2026-38344 (CVSS 7.5) — A NULL pointer dereference in the get_min_buffer_size function (/libswscale/slice.c) of FFmpeg N-122528-gdd297…
    CVE-2026-38343 (CVSS 6.5) — An integer overflow in the libavfilter/vf_scale.c component of FFmpeg N-122528-gdd2976b9e1 allows attackers to…

    References

    http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=dabea74d0e82ea80cd344f630497cafcb3ef872c
    http://googlechromereleases.blogspot.com/2015/10/stable-channel-update.html
    http://rhn.redhat.com/errata/RHSA-2015-1912.html
    http://www.debian.org/security/2015/dsa-3376
    http://www.securityfocus.com/bid/77073
    http://www.securitytracker.com/id/1033816
    http://www.ubuntu.com/usn/USN-2770-1
    http://www.ubuntu.com/usn/USN-2770-2
    https://code.google.com/p/chromium/issues/detail?id=447860
    https://code.google.com/p/chromium/issues/detail?id=532967
    https://codereview.chromium.org/1376913003
    https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html
    https://security.gentoo.org/glsa/201603-09
    http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=dabea74d0e82ea80cd344f630497cafcb3ef872c
    http://googlechromereleases.blogspot.com/2015/10/stable-channel-update.html
    http://rhn.redhat.com/errata/RHSA-2015-1912.html
    http://www.debian.org/security/2015/dsa-3376
    http://www.securityfocus.com/bid/77073
    http://www.securitytracker.com/id/1033816
    http://www.ubuntu.com/usn/USN-2770-1
    http://www.ubuntu.com/usn/USN-2770-2
    https://code.google.com/p/chromium/issues/detail?id=447860
    https://code.google.com/p/chromium/issues/detail?id=532967
    https://codereview.chromium.org/1376913003
    https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html
    https://security.gentoo.org/glsa/201603-09

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High