{"id":"CVE-2026-53314","summary":"padata: Put CPU offline callback in ONLINE section to allow failure","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Put CPU offline callback in ONLINE section to allow failure\n\nsyzbot reported the following warning:\n\n    DEAD callback error for CPU1\n    WARNING: kernel/cpu.c:1463 at _cpu_down+0x759/0x1020 kernel/cpu.c:1463, CPU#0: syz.0.1960/14614\n\nat commit 4ae12d8bd9a8 (\"Merge tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux\")\nwhich tglx traced to padata_cpu_dead() given it's the only\nsub-CPUHP_TEARDOWN_CPU callback that returns an error.\n\nFailure isn't allowed in hotplug states before CPUHP_TEARDOWN_CPU\nso move the CPU offline callback to the ONLINE section where failure is\npossible.","modified":"2026-07-08T08:13:45.494592065Z","published":"2026-06-26T19:41:07.447Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53314.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3e6c08dd97dcd22a00aee469e0adfa819071d80e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a9f29a3e076b637d2234093e57989cf755ded5b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65dae8b34f0810f3fa9f77c4c63650cd20820693"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6d44f477000c6352de6b05e9e276e62083e5fbf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c8c4a2972f83c8b68ff03b43cecdb898939ff851"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53314.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53314"},{"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":"894c9ef9780c5cf2f143415e867ee39a33ecb75d"},{"fixed":"65dae8b34f0810f3fa9f77c4c63650cd20820693"},{"fixed":"a6d44f477000c6352de6b05e9e276e62083e5fbf"},{"fixed":"3e6c08dd97dcd22a00aee469e0adfa819071d80e"},{"fixed":"5a9f29a3e076b637d2234093e57989cf755ded5b"},{"fixed":"9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3"},{"fixed":"c8c4a2972f83c8b68ff03b43cecdb898939ff851"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"2b1207801c393a5e9af2fbac2dd8b0377d8ae63a"},{"last_affected":"0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14"},{"last_affected":"3f4d3d010477365ee1aefedc3ad52563740b777e"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.202"},{"fixed":"4.20"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.4.22"},{"fixed":"5.5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.5.6"},{"fixed":"5.6"}]}],"versions":["v4.19.201","v4.19.200","v4.19.199","v4.19.198","v4.19.197","v4.19.196","v4.19.195","v4.19.194","v4.19.193","v4.19.192","v4.19.191","v4.19.190","v4.19.189","v4.19.188","v4.19.187","v4.19.186","v4.19.185","v4.19.184","v4.19.183","v4.19.182","v4.19.181","v4.19.180","v4.19.179","v4.19.178","v4.19.177","v4.19.176","v4.19.175","v4.19.174","v4.19.173","v4.19.172","v4.19.171","v4.19.170","v4.19.169","v4.19.168","v4.19.167","v4.19.166","v4.19.165","v4.19.164","v4.19.163","v4.19.162","v4.19.161","v4.19.160","v4.19.159","v4.19.158","v4.19.157","v4.19.156","v4.19.155","v4.19.154","v4.19.153","v4.19.152","v4.19.151","v4.19.150","v4.19.149","v4.19.148","v4.19.147","v4.19.146","v4.19.145","v4.19.144","v4.19.143","v4.19.142","v4.19.141","v4.19.140","v4.19.139","v4.19.138","v4.19.137","v4.19.136","v4.19.135","v4.19.134","v4.19.133","v4.19.132","v4.19.131","v4.19.130","v4.19.129","v4.19.128","v4.19.127","v4.19.126","v4.19.125","v4.19.124","v4.19.123","v4.19.122","v4.19.121","v4.19.120","v4.19.119","v4.19.118","v4.19.117","v4.19.116","v4.19.115","v4.19.114","v4.19.113","v4.19.112","v4.19.111","v4.19.110","v4.19.109","v4.19.108","v4.19.107","v4.19.106","v5.5.5","v5.4.21","v4.19.105","v5.5.4","v5.4.20","v4.19.104","v5.5.3","v5.4.19","v4.19.103","v5.5.2","v5.4.18","v4.19.102","v5.5","v5.4.17","v4.19.101","v5.5.1","v5.5-rc5","v4.19.100","v5.4.16","v5.5-rc7","v5.5-rc2","v5.5-rc1","v5.4.15","v4.19.99","v5.4","v4.19.98","v5.4.14","v5.5-rc4","v5.4.13","v4.19.97","v5.5-rc3","v5.5-rc6","v5.4.12","v4.19.96","v5.4.11","v4.19.95","v5.4.10","v4.19.94","v5.4.9","v5.4.8","v4.19.93","v5.4.7","v4.19.92","v5.4.6","v4.19.91","v5.4.5","v4.19.90","v5.4.4","v4.19.89","v5.4.3","v4.19.88","v5.4.2","v5.4-rc1","v4.19.87","v5.4.1","v5.4-rc6","v5.4-rc3","v4.19.86","v5.4-rc4","v5.4-rc8","v4.19.85","v4.19.84","v5.4-rc7","v5.4-rc5","v5.3","v5.4-rc2","v4.19.83","v4.19.82","v4.19.81","v4.19.80","v4.19.79","v4.19.78","v4.19.77","v4.19.76","v4.19.75","v5.3-rc5","v5.3-rc1","v4.19.74","v5.3-rc2","v4.19.73","v5.3-rc3","v5.3-rc8","v4.19.72","v5.3-rc7","v5.3-rc4","v4.19.71","v4.19.70","v4.19.69","v5.2","v5.3-rc6","v4.19.68","v4.19.67","v4.19.66","v4.19.65","v4.19.64","v4.19.63","v4.19.62","v4.19.61","v4.19.60","v5.2-rc2","v4.19.59","v5.2-rc7","v5.2-rc4","v4.19.58","v5.2-rc1","v4.19.57","v5.2-rc5","v5.2-rc6","v4.19.56","v5.2-rc3","v4.19.55","v5.1","v4.19.54","v4.19.53","v4.19.52","v4.19.51","v4.19.50","v4.19.49","v4.19.48","v4.19.47","v4.19.46","v4.19.45","v4.19.44","v4.19.43","v5.0-rc8","v4.19.42","v5.1-rc7","v5.1-rc1","v4.19.41","v5.1-rc6","v4.19.40","v5.1-rc5","v4.19.39","v4.19.38","v5.0","v4.19.37","v5.1-rc3","v4.19.36","v5.1-rc2","v4.19.35","v5.1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