High [CVE-2026-95387] Denial of Service via heap-based buffer overflow in SPDY dissector
This high-severity Red Hat Linux advisory covers CVE-2026-95387; related products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
Denial of Service via heap-based buffer overflow in SPDY dissector. Red Hat rates this important (CVSS 8.1).
Weakness: CWE-787.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more.
Affected products named by the advisory: Red Hat Enterprise Linux 9; 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 SPDY protocol dissector in Wireshark or TShark to prevent processing of the vulnerable protocol format. For TShark command-line usage, pass the protocol disable flag: ``` tshark --disable-protocol spdy -r <capture_file> ``` For persistent configuration across sessions, append the protocol to the disabled protocols file: ``` echo "spdy" >> ~/.config/wireshark/disabled_protos ``` In the Wireshark graphical interface: 1. Navigate to Analyze -> Enabled Protocols... 2. Search for "SPDY" and clear the checkbox. 3. Click OK or Save. Caveat: Disabling the dissector prevents the decoding and inspection of SPDY protocol streams, treating them as generic TCP or TLS payload. Wireshark must be restarted if it is currently running for configuration changes to take effect. Always ensure capture analysis is conducted with non-privileged user privileges.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
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