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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.
FEDORA-2026-4401b94ad0 (libpcap-1.10.7-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-4401b94ad0
FEDORA-2026-c3fb234b87 (libpcap-1.10.7-1.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-c3fb234b87
FEDORA-2026-c3fb234b87 has been pushed to the Fedora 45 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c3fb234b87` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c3fb234b87 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-4401b94ad0 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-4401b94ad0` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-4401b94ad0 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-395bd81c94 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-395bd81c94` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-395bd81c94 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-395bd81c94 (libpcap-1.10.7-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-c3fb234b87 (libpcap-1.10.7-1.fc45) has been pushed to the Fedora 45 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-4401b94ad0 (libpcap-1.10.7-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.