Medium [CVE-2026-96418] Denial of Service via infinite loop in TIFF protocol dissector
This medium-severity Red Hat Linux advisory covers CVE-2026-96418; related products: Red Hat Enterprise Linux 10, Red Hat package: wireshark.
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Summary
Denial of Service via infinite loop in TIFF protocol dissector. Red Hat rates this moderate (CVSS 6.5).
Weakness: CWE-835.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: wireshark.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Mitigation checklist
- Disable the TIFF protocol dissector in Wireshark or tshark to prevent processing of malformed TIFF packets: 1. In the Wireshark GUI: Navigate to Analyze -> Enabled Protocols..., search for "TIFF", uncheck the entry, and click OK. 2. When using the command-line utility tshark: Append the `--disable-protocol tiff` option to the command: tshark --disable-protocol tiff -r <capture_file> Caveats: Disabling this protocol prevents decoding and analyzing TIFF image payloads within packet captures. In addition, avoid opening capture files from untrusted sources, and avoid executing packet analysis utilities under root or privileged accounts. No service restart is required as Wireshark operates as a user-space utility.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
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