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CVE-2026-53705 Red Hat CVE debrief

CVE-2026-53705 is a high-severity vulnerability in GStreamer's WavPack audio decoder. The flaw occurs when processing specially crafted WavPack files, leading to an integer overflow in buffer size calculation. This causes a small heap allocation, allowing the WavPack library to write decoded audio samples beyond the allocated buffer, resulting in heap memory corruption. The vulnerability affects both 32-bit and 64-bit systems and can be exploited by convincing a user to open a malicious WavPack audio file, potentially leading to application crashes or arbitrary code execution.

Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
CVSS
HIGH 7.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-08-03
Advisory published
2026-06-15
Advisory updated
2026-08-03

Who should care

Users and administrators of applications that utilize GStreamer's WavPack audio decoder, particularly those in multimedia processing or playback software, should be aware of this vulnerability. Developers and maintainers of affected software are advised to apply patches or updates to mitigate the risk.

Technical summary

The vulnerability is caused by an integer overflow in the buffer size calculation (4 * block_samples * channels) in gst_wavpack_dec_handle_frame(). This leads to a small heap allocation, which is then overflowed by the WavPack library writing decoded audio samples. The issue arises from the arithmetic being performed in 32-bit integers before promotion to the allocation size type.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates from the vendor as soon as they become available.
  • Be cautious when opening WavPack audio files from untrusted sources.
  • Consider using alternative audio decoders or players until a patch is applied.

Evidence notes

The CVE record and NVD detail provide official information about the vulnerability. Additional references from Red Hat offer further insights into the issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53705 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53705

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53705 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53705

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.