{"id":"CLSA-2025-1754037789","summary":"Fix of 5 CVEs","details":"   * Focal update: v5.4.291 upstream stable release (LP: #2106002) //\n     CVE-2025-21760 // CVE-url: https://ubuntu.com/security/CVE-2025-21760\n     - ndisc: extend RCU protection in ndisc_send_skb()\n   * Focal update: v5.4.291 upstream stable release (LP: #2106002) //\n     CVE-2025-21761 // CVE-url: https://ubuntu.com/security/CVE-2025-21761\n     - openvswitch: use RCU protection in ovs_vport_cmd_fill_info()\n   * Focal update: v5.4.291 upstream stable release (LP: #2106002) //\n     CVE-2025-21764 // CVE-url: https://ubuntu.com/security/CVE-2025-21764\n     - ndisc: use RCU protection in ndisc_alloc_skb()\n   * Focal update: v5.4.291 upstream stable release (LP: #2106002) //\n     CVE-2025-21765 // CVE-url: https://ubuntu.com/security/CVE-2025-21764\n     - ipv6: use RCU protection in ip6_default_advmss()\n   * Focal update: v5.4.291 upstream stable release (LP: #2106002) // CVE-url:\n     https://ubuntu.com/security/CVE-2025-21764\n     - ipv4: use RCU protection in rt_is_expired()\n     - ipv4: use RCU protection in inet_select_addr()\n   * CVE-url: https://ubuntu.com/security/CVE-2025-21762\n     - net: treat possible_net_t net pointer as an RCU one and add read_pnet_rcu()\n     - net: add dev_net_rcu() helper\n     - arp: use RCU protection in arp_xmit()","modified":"2026-06-04T10:04:22.268765331Z","published":"2025-08-01T08:43:13Z","upstream":["CVE-2025-21760","CVE-2025-21761","CVE-2025-21762","CVE-2025-21764","CVE-2025-21765"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2025-1754037789.html"}],"affected":[{"package":{"name":"linux-buildinfo-4.15.0-250-tuxcare.els38-generic","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-buildinfo-4.15.0-250-tuxcare.els38-generic?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-buildinfo-4.15.0-250-tuxcare.els38-lowlatency","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-buildinfo-4.15.0-250-tuxcare.els38-lowlatency?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-cloud-tools-4.15.0-250-tuxcare.els38","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-cloud-tools-4.15.0-250-tuxcare.els38?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-cloud-tools-4.15.0-250-tuxcare.els38-generic","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-cloud-tools-4.15.0-250-tuxcare.els38-generic?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-cloud-tools-4.15.0-250-tuxcare.els38-lowlatency","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-cloud-tools-4.15.0-250-tuxcare.els38-lowlatency?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-cloud-tools-common","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-cloud-tools-common?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-doc","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-doc?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-headers-4.15.0-250-tuxcare.els38","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-headers-4.15.0-250-tuxcare.els38?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-headers-4.15.0-250-tuxcare.els38-generic","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-headers-4.15.0-250-tuxcare.els38-generic?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-headers-4.15.0-250-tuxcare.els38-lowlatency","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-headers-4.15.0-250-tuxcare.els38-lowlatency?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-image-unsigned-4.15.0-250-tuxcare.els38-generic","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/linux-image-unsigned-4.15.0-250-tuxcare.els38-generic?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.261"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2025-1754037789.json"}},{"package":{"name":"linux-image-unsigned-4.15.0-250-tuxcare.els38-lowlatency","ecosystem":"TuxCare:Ubun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