RLSA-2026:97879: Important: wireshark security update
The wireshark packages contain a network protocol analyzer used to capture and browse the traffic running on a computer network.
Security Fix(es):
wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash (CVE-2026-76886)
wireshark: Wireshark: Denial of Service via RRC protocol dissector out-of-bounds write (CVE-2026-76880)
wireshark: Wireshark: Denial of Service vulnerability in ESS protocol dissector (CVE-2026-76919)
wireshark: Wireshark: Denial of Service vulnerability in H.245 protocol dissector (CVE-2026-76927)
wireshark: wireshark: Denial of Service via heap-based buffer overflow in SPDY dissector (CVE-2026-95387)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rocky-linux/wiresharkto a version that resolves this vulnerability.Fixed in 1:3.4.10-14.el9_9 - Upgrade
Upgrade
rocky-linux/wireshark-clito a version that resolves this vulnerability.Fixed in 1:3.4.10-14.el9_9 - Upgrade
Upgrade
rocky-linux/wireshark-cli-debuginfoto a version that resolves this vulnerability.Fixed in 1:3.4.10-14.el9_9 - Upgrade
Upgrade
rocky-linux/wireshark-debuginfoto a version that resolves this vulnerability.Fixed in 1:3.4.10-14.el9_9 - Upgrade
Upgrade
rocky-linux/wireshark-debugsourceto a version that resolves this vulnerability.Fixed in 1:3.4.10-14.el9_9 - Upgrade
Upgrade
rocky-linux/wireshark-develto a version that resolves this vulnerability.Fixed in 1:3.4.10-14.el9_9
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Which installed packages are in scope for this update?
The advisory covers rocky-linux packages wireshark, wireshark-cli, wireshark-cli-debuginfo, wireshark-debuginfo, wireshark-debugsource, and wireshark-devel. Systems with either the graphical analyzer or command-line package should be included in inventory and remediation checks.
What attacker access is indicated by the severity vector?
The vector indicates network-based exploitation with no required privileges and no user interaction, but with high attack complexity. It rates confidentiality, integrity, and availability impacts as high.
Which protocol-processing components are implicated?
The fixes address dissectors for C12.22, RRC, ESS, H.245, and SPDY. Reported failure modes include crashes, an out-of-bounds write, and a heap-based buffer overflow.