{"id":"CVE-2026-97956","state":"PUBLISHED","title":"net: net_failover: Fix the deadlock in net_failover_slave_name_change()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: net_failover: Fix the deadlock in net_failover_slave_name_change()\n\nThis is a sibling fix of commit\nb84c5632c7b3 (\"net: net_failover: Fix the deadlock in slave register\").\nThere is netdev_lock_ops() in the upper callers, so using netif_open()\ninstead of dev_open().\n\nCall Trace:\n __schedule+0x2bb/0x650\n schedule+0x27/0xb0\n schedule_preempt_disabled+0x15/0x30\n __mutex_lock.constprop.0+0x550/0xaf0\n __mutex_lock_slowpath+0x13/0x20\n mutex_lock+0x3b/0x50\n dev_open+0x3b/0xe0\n net_failover_slave_name_change+0x22/0x40\n failover_event+0xd4/0x1e0\n notifier_call_chain+0x62/0xf0\n raw_notifier_call_chain+0x16/0x30\n call_netdevice_notifiers_info+0x50/0x80\n netif_change_name+0x200/0x330\n do_setlink.isra.0+0xb12/0xdf0\n ? security_capable+0x9a/0x1e0\n ? ns_capable+0x31/0x60\n rtnl_setlink+0x302/0x670\n ? netlink_recvmsg+0x296/0x340\n ? security_capable+0x9a/0x1e0\n ? __pfx_rtnl_setlink+0x10/0x10\n rtnetlink_rcv_msg+0x384/0x460\n ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n netlink_rcv_skb+0x61/0x120\n rtnetlink_rcv+0x15/0x30\n netlink_unicast+0x28f/0x3c0\n netlink_sendmsg+0x216/0x450\n __sys_sendto+0x222/0x230\n __x64_sys_sendto+0x24/0x40\n x64_sys_call+0x1d5d/0x2390\n do_syscall_64+0x105/0x5a0\n ? do_syscall_64+0x140/0x5a0\n ? exc_page_fault+0x94/0x1e0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e","publishedAt":"2026-09-25T10:23:02.560Z","updatedAt":"2026-10-19T09:11:22.384Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7e4d784f5810bba76c4593791028e13cce4af547","status":"affected","lessThan":"4b20e66d2e52d3628db4dccc1a33f134e73375d5","versionType":"git"},{"version":"7e4d784f5810bba76c4593791028e13cce4af547","status":"affected","lessThan":"c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5","versionType":"git"},{"version":"7e4d784f5810bba76c4593791028e13cce4af547","status":"affected","lessThan":"985a663bf00799c1daf1c5789efa6406958780c8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/net_failover.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/net_failover.c"]}],"references":["https://git.kernel.org/stable/c/4b20e66d2e52d3628db4dccc1a33f134e73375d5","https://git.kernel.org/stable/c/c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5","https://git.kernel.org/stable/c/985a663bf00799c1daf1c5789efa6406958780c8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97956.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97956","state":"PUBLISHED","datePublished":"2026-09-25T10:23:02.560Z","dateUpdated":"2026-10-19T09:11:22.384Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:18:58.205Z"},"containers":{"cna":{"title":"net: net_failover: Fix the deadlock in net_failover_slave_name_change()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: net_failover: Fix the deadlock in net_failover_slave_name_change()\n\nThis is a sibling fix of commit\nb84c5632c7b3 (\"net: net_failover: Fix the deadlock in slave register\").\nThere is netdev_lock_ops() in the upper callers, so using netif_open()\ninstead of dev_open().\n\nCall Trace:\n __schedule+0x2bb/0x650\n schedule+0x27/0xb0\n schedule_preempt_disabled+0x15/0x30\n __mutex_lock.constprop.0+0x550/0xaf0\n __mutex_lock_slowpath+0x13/0x20\n mutex_lock+0x3b/0x50\n dev_open+0x3b/0xe0\n net_failover_slave_name_change+0x22/0x40\n failover_event+0xd4/0x1e0\n notifier_call_chain+0x62/0xf0\n raw_notifier_call_chain+0x16/0x30\n call_netdevice_notifiers_info+0x50/0x80\n netif_change_name+0x200/0x330\n do_setlink.isra.0+0xb12/0xdf0\n ? security_capable+0x9a/0x1e0\n ? ns_capable+0x31/0x60\n rtnl_setlink+0x302/0x670\n ? netlink_recvmsg+0x296/0x340\n ? security_capable+0x9a/0x1e0\n ? __pfx_rtnl_setlink+0x10/0x10\n rtnetlink_rcv_msg+0x384/0x460\n ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n netlink_rcv_skb+0x61/0x120\n rtnetlink_rcv+0x15/0x30\n netlink_unicast+0x28f/0x3c0\n netlink_sendmsg+0x216/0x450\n __sys_sendto+0x222/0x230\n __x64_sys_sendto+0x24/0x40\n x64_sys_call+0x1d5d/0x2390\n do_syscall_64+0x105/0x5a0\n ? do_syscall_64+0x140/0x5a0\n ? exc_page_fault+0x94/0x1e0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7e4d784f5810bba76c4593791028e13cce4af547","status":"affected","lessThan":"4b20e66d2e52d3628db4dccc1a33f134e73375d5","versionType":"git"},{"version":"7e4d784f5810bba76c4593791028e13cce4af547","status":"affected","lessThan":"c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5","versionType":"git"},{"version":"7e4d784f5810bba76c4593791028e13cce4af547","status":"affected","lessThan":"985a663bf00799c1daf1c5789efa6406958780c8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/net_failover.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/net_failover.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4b20e66d2e52d3628db4dccc1a33f134e73375d5"},{"url":"https://git.kernel.org/stable/c/c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5"},{"url":"https://git.kernel.org/stable/c/985a663bf00799c1daf1c5789efa6406958780c8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:11:22.384Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}