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CVE Vulnerabilities

CVE-2026-73434

Out-of-bounds Read

Published: Aug 12, 2026 | Modified: Sep 23, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
6.1 MODERATE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-73434
CWEhttps://cwe.mitre.org/data/definitions/125.html

A flaw was found in GStreamer gst-plugins-good (avidemux). In gst_avi_demux_riff_parse_vprp(), the number of available gst_riff_vprp_video_field_desc entries is calculated by dividing the remaining buffer size by the attacker-controlled vprp->fields value, rather than by sizeof(gst_riff_vprp_video_field_desc). This can cause the parser to treat more field descriptors as available than fit in the input buffer, resulting in out-of-bounds reads. Processing a crafted AVI via playbin/decodebin can crash the application (denial of service). Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

Weakness

The product reads data past the end, or before the beginning, of the intended buffer.

Affected Software

NameVendorStart VersionEnd Version
GstreamerGstreamer*1.28.6 (excluding)
Enterprise_linuxRedhat7.0 (including)7.0 (including)
Enterprise_linuxRedhat8.0 (including)8.0 (including)
Enterprise_linuxRedhat9.0 (including)9.0 (including)
Enterprise_linuxRedhat10.0 (including)10.0 (including)
Red Hat Enterprise Linux 10RedHatgstreamer1-plugins-good-0:1.26.7-2.el10_2.5*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHatgstreamer1-plugins-good-0:1.24.11-1.el10_0.4*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatgstreamer1-plugins-good-0:1.10.4-4.el7_9.3*
Red Hat Enterprise Linux 8RedHatgstreamer1-plugins-good-0:1.16.1-7.el8_10.3*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatgstreamer1-plugins-good-0:1.16.1-4.el8_4.2*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatgstreamer1-plugins-good-0:1.16.1-4.el8_4.2*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatgstreamer1-plugins-good-0:1.16.1-4.el8_6.3*
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRedHatgstreamer1-plugins-good-0:1.16.1-4.el8_6.3*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatgstreamer1-plugins-good-0:1.16.1-5.el8_8.3*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatgstreamer1-plugins-good-0:1.16.1-5.el8_8.3*
Red Hat Enterprise Linux 9RedHatgstreamer1-plugins-good-0:1.22.12-7.el9_8.4*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatgstreamer1-plugins-good-0:1.18.4-8.el9_2.3*
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRedHatgstreamer1-plugins-good-0:1.22.1-4.el9_4.3*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatgstreamer1-plugins-good-0:1.22.12-5.el9_6.3*
Gst-plugins-good1.0Ubuntuesm-infra-legacy/xenial*
Gst-plugins-good1.0Ubuntuesm-infra/bionic*
Gst-plugins-good1.0Ubuntuesm-infra/focal*
Gst-plugins-good1.0Ubuntujammy*
Gst-plugins-good1.0Ubuntunoble*
Gst-plugins-good1.0Ubunturesolute*
Gst-plugins-good1.0Ubuntuupstream*

Potential Mitigations

  • Assume all input is malicious. Use an “accept known good” input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, “boat” may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as “red” or “blue.”
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code’s environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.

References

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