[CLSA-2025:1754037492] Fix CVE(s): CVE-2025-21760, CVE-2025-21761, CVE-2025-21762, CVE-2025-21764
Type:
security
Severity:
Important
Release date:
2026-10-21 18:10:52 UTC
Description:
[ Ubuntu: 4.15.0-250.261 ] * Focal update: v5.4.291 upstream stable release (LP: #2106002) // CVE-2025-21760 // CVE-url: https://ubuntu.com/security/CVE-2025-21760 - ndisc: extend RCU protection in ndisc_send_skb() * Focal update: v5.4.291 upstream stable release (LP: #2106002) // CVE-2025-21761 // CVE-url: https://ubuntu.com/security/CVE-2025-21761 - openvswitch: use RCU protection in ovs_vport_cmd_fill_info() * Focal update: v5.4.291 upstream stable release (LP: #2106002) // CVE-2025-21764 // CVE-url: https://ubuntu.com/security/CVE-2025-21764 - ndisc: use RCU protection in ndisc_alloc_skb() * Focal update: v5.4.291 upstream stable release (LP: #2106002) // CVE-2025-21765 // CVE-url: https://ubuntu.com/security/CVE-2025-21764 - ipv6: use RCU protection in ip6_default_advmss() * Focal update: v5.4.291 upstream stable release (LP: #2106002) // CVE-url: https://ubuntu.com/security/CVE-2025-21764 - ipv4: use RCU protection in rt_is_expired() - ipv4: use RCU protection in inet_select_addr() * CVE-url: https://ubuntu.com/security/CVE-2025-21762 - net: treat possible_net_t net pointer as an RCU one and add read_pnet_rcu() - net: add dev_net_rcu() helper - arp: use RCU protection in arp_xmit()
CVEs fixed:
Updated packages:
  • linux-buildinfo-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:98db8886b1e0bb2745b3363b6635214ee3a1363d
  • linux-buildinfo-4.15.0-250-tuxcare.els48-lowlatency_4.15.0-250.261~16.04.1_amd64.deb
    sha:fb5926ab9846f7a1b1df0ccd71e127580f29250e
  • linux-cloud-tools-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:ccd499bde4b5613b6120bf183482b9c88adf7b75
  • linux-cloud-tools-4.15.0-250-tuxcare.els48-lowlatency_4.15.0-250.261~16.04.1_amd64.deb
    sha:07430f3e733eb908d670c6ce7ac4d366d0dc3c44
  • linux-headers-4.15.0-250-tuxcare.els48_4.15.0-250.261~16.04.1_all.deb
    sha:c8abcc1e6a009d96696d7c9622cb33cdb00e23e8
  • linux-headers-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:6ad401bd8473f22d594a827be484a2433540ec93
  • linux-headers-4.15.0-250-tuxcare.els48-lowlatency_4.15.0-250.261~16.04.1_amd64.deb
    sha:9d2f34832b92b694b239a54285e7ee1d62878516
  • linux-hwe-cloud-tools-4.15.0-250-tuxcare.els48_4.15.0-250.261~16.04.1_amd64.deb
    sha:380ccab6966d945f41496c190ad8ea7c0e133f22
  • linux-hwe-tools-4.15.0-250-tuxcare.els48_4.15.0-250.261~16.04.1_amd64.deb
    sha:7b59b06c941f167853a045a666abe42c51150d7a
  • linux-image-unsigned-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:8c19142c083c71269866a2d71117bdcfe41d9b84
  • linux-image-unsigned-4.15.0-250-tuxcare.els48-lowlatency_4.15.0-250.261~16.04.1_amd64.deb
    sha:6dd15e481636dca2ca1cd4069e1bef6f7c789d08
  • linux-modules-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:f6d34d2119da9fb2662920a52da25a282d5dbc2e
  • linux-modules-4.15.0-250-tuxcare.els48-lowlatency_4.15.0-250.261~16.04.1_amd64.deb
    sha:f32f91f62513b9a32d0fe7c32929a6eb7c745ad4
  • linux-modules-extra-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:2034a80eb46df67657ce8d31aaf97eee7d0bd70b
  • linux-source-4.15.0_4.15.0-250.261~16.04.1_all.deb
    sha:3b16a739673e79bc7a25606637f9a8a481dd1cf5
  • linux-tools-4.15.0-250-tuxcare.els48-generic_4.15.0-250.261~16.04.1_amd64.deb
    sha:9a974d2e9bb7bfa8353c52848a65b0c1bbd87faa
  • linux-tools-4.15.0-250-tuxcare.els48-lowlatency_4.15.0-250.261~16.04.1_amd64.deb
    sha:0038f737619942f9137685d66e9201d9d57aebc0
Notes:
This page is generated automatically and has not been checked for errors. For clarification or corrections please contact the CloudLinux Packaging Team.