{"id":"CVE-2026-63858","summary":"netfilter: nf_tables: add hook transactions for device deletions","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: add hook transactions for device deletions\n\nRestore the flag that indicates that the hook is going away, ie.\nNFT_HOOK_REMOVE, but add a new transaction object to track deletion\nof hooks without altering the basechain/flowtable hook_list during\nthe preparation phase.\n\nThe existing approach that moves the hook from the basechain/flowtable\nhook_list to transaction hook_list breaks netlink dump path readers\nof this RCU-protected list.\n\nIt should be possible use an array for nft_trans_hook to store the\ndeleted hooks to compact the representation but I am not expecting\nmany hook object, specially now that wildcard support for devices\nis in place.\n\nNote that the nft_trans_chain_hooks() list contains a list of struct\nnft_trans_hook objects for DELCHAIN and DELFLOWTABLE commands, while\nthis list stores struct nft_hook objects for NEWCHAIN and NEWFLOWTABLE.\nNote that new commands can be updated to use nft_trans_hook for\nconsistency.\n\nThis patch also adapts the event notification path to deal with the list\nof hook transactions.","modified":"2026-07-22T05:30:05.162831563Z","published":"2026-07-19T14:04:46.967Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63858.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/10f79dbd7719d1da9f5884d13060322d8729f091"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4e69bfb32b2db323d9205fdb30e284481b37817c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63858.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63858"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b6d9014a3335194590abdd2a2471ef5147a67645"},{"fixed":"4e69bfb32b2db323d9205fdb30e284481b37817c"},{"fixed":"10f79dbd7719d1da9f5884d13060322d8729f091"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"7a248f9c74f9f62799718c12efd9e9e391d60b6f"},{"last_affected":"f275989ad04159dbfc62cefb65ba9c5ba1d7c34f"},{"last_affected":"62d91062058b42bf70b2c3446aec397bb0ce15ee"},{"last_affected":"99180dec5ae582227219d1fdd0dd5ccf53ec7491"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.10.122"},{"fixed":"5.11"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.15.47"},{"fixed":"5.16"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.17.15"},{"fixed":"5.18"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.18.4"},{"fixed":"5.19"}]}],"versions":["v5.18","v5.18-rc1","v5.18.3","v5.17.14","v5.15.46","v5.10.121","v5.18.2","v5.17.13","v5.15.45","v5.10.120","v5.18.1","v5.17.12","v5.15.44","v5.10.119","v5.10.118","v5.15.43","v5.17.11","v5.18-rc7","v5.18-rc2","v5.17.10","v5.15.42","v5.17.9","v5.15.41","v5.10.117","v5.17.8","v5.15.40","v5.10.116","v5.18-rc5","v5.17","v5.18-rc4","v5.18-rc3","v5.18-rc6","v5.17.7","v5.15.39","v5.10.115","v5.17.6","v5.15.38","v5.10.114","v5.17.5","v5.15.37","v5.10.113","v5.15.36","v5.17.4","v5.15.35","v5.10.112","v5.17.3","v5.15.34","v5.10.111","v5.10.110","v5.15.33","v5.17.2","v5.10.109","v5.15.32","v5.17.1","v5.17-rc6","v5.17-rc4","v5.15.31","v5.10.108","v5.17-rc8","v5.17-rc7","v5.15.30","v5.10.107","v5.17-rc1","v5.15.29","v5.10.106","v5.17-rc3","v5.15.28","v5.10.105","v5.17-rc2","v5.15.27","v5.10.104","v5.15.26","v5.10.103","v5.17-rc5","v5.16","v5.15.25","v5.10.102","v5.15.24","v5.10.101","v5.15.23","v5.10.100","v5.15.22","v5.10.99","v5.15.21","v5.10.98","v5.15.20","v5.10.97","v5.15.19","v5.10.96","v5.15.18","v5.10.95","v5.15.17","v5.10.94","v5.15.16","v5.10.93","v5.10.92","v5.15.15","v5.16-rc1","v5.10.91","v5.15.14","v5.16-rc8","v5.15.13","v5.10.90","v5.16-rc5","v5.16-rc6","v5.15.12","v5.10.89","v5.16-rc7","v5.15.11","v5.10.88","v5.16-rc3","v5.16-rc2","v5.15.10","v5.10.87","v5.15.9","v5.10.86","v5.16-rc4","v5.10.85","v5.15.8","v5.10.84","v5.15.7","v5.15","v5.15.6","v5.10.83","v5.10.82","v5.15.5","v5.10.81","v5.15.4","v5.10.80","v5.15.3","v5.15.2","v5.10.79","v5.15.1","v5.10.78","v5.10.77","v5.15-rc2","v5.15-rc1","v5.15-rc4","v5.15-rc7","v5.10.76","v5.15-rc3","v5.15-rc5","v5.10.75","v5.15-rc6","v5.10.74","v5.14","v5.14-rc3","v5.10.73","v5.10.72","v5.10.71","v5.14-rc1","v5.10.70","v5.10.69","v5.10.68","v5.10.67","v5.10.66","v5.10.65","v5.10.64","v5.10.63","v5.10.62","v5.10.61","v5.14-rc2","v5.14-rc7","v5.14-rc6","v5.10.60","v5.13-rc1","v5.14-rc5","v5.14-rc4","v5.10.59","v5.10.58","v5.10.57","v5.10.56","v5.10.55","v5.13","v5.10.54","v5.10.53","v5.10.52","v5.10.51","v5.10.50","v5.10.49","v5.10.48","v5.13-rc6","v5.10.47","v5.13-rc7","v5.10.46","v5.13-rc3","v5.13-rc2","v5.13-rc4","v5.10.45","v5.10.44","v5.13-rc5","v5.10.43","v5.10.42","v5.10.41","v5.10.40","v5.10.39","v5.12","v5.10.38","v5.10.37","v5.10.36","v5.10.35","v5.10.34","v5.12-rc2","v5.12-rc1-dontuse","v5.12-rc1","v5.10.33","v5.10.32","v5.12-rc8","v5.12-rc3","v5.10.31","v5.12-rc7","v5.12-rc5","v5.10.30","v5.12-rc6","v5.10.29","v5.10.28","v5.10.27","v5.12-rc4","v5.10","v5.10.26","v5.10.25","v5.11","v5.10.24","v5.10.23","v5.10.22","v5.10.21","v5.10.20","v5.10.19","v5.10.18","v5.11-rc3","v5.10.17","v5.11-rc7","v5.11-rc6","v5.10.16","v5.11-rc5","v5.11-rc1","v5.10.15","v5.11-rc4","v5.10.14","v5.11-rc2","v5.10.13","v5.10.12","v5.10.11","v5.10.10","v5.10.9","v5.10-rc1","v5.10.8","v5.10.7","v5.10.6","v5.10.5","v5.10.4","v5.10.3","v5.10.2","v5.10.1","v5.10-rc7","v5.10-rc4","v5.10-rc3","v5.10-rc6","v5.9","v5.10-rc2","v5.10-rc5","v5.9-rc1","v5.9-rc7","v5.9-rc8","v5.9-rc6","v5.9-rc4","v5.9-rc5","v5.9-rc3","v5.9-rc2","v5.8","v5.7","v5.8-rc2","v5.8-rc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