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{"bugzilla": {"description": "kernel: rxrpc: Fix delayed ACKs to not set the reference serial number", "id": "2272834", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2272834"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nrxrpc: Fix delayed ACKs to not set the reference serial number\nFix the construction of delayed ACKs to not set the reference serial number\nas they can't be used as an RTT reference.", "A vulnerability in the Linux kernel affects the Remote Procedure Call over the Rx protocol (rxrpc) subsystem. The flaw involves an issue with delayed acknowledgments (ACKs) in which the system mistakenly sets the reference serial number. This reference serial number is not valid in this context and cannot be used as a Round Trip Time (RTT) reference, leading to potential disruptions in network communication."], "name": "CVE-2024-26677", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26677\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26677\nhttps://lore.kernel.org/linux-cve-announce/2024040252-CVE-2024-26677-8bc6@gregkh/T"], "statement": "If exploited, this vulnerability could lead to denial of service (DoS) attacks or other security breaches by causing network instability.", "threat_severity": "Moderate"}