{"cve":"CVE-2026-53314","nvd":{"published":"2026-06-26T20:17:24.717","modified":"2026-07-06T20:13:40.943","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/3e6c08dd97dcd22a00aee469e0adfa819071d80e","https://git.kernel.org/stable/c/5a9f29a3e076b637d2234093e57989cf755ded5b","https://git.kernel.org/stable/c/65dae8b34f0810f3fa9f77c4c63650cd20820693","https://git.kernel.org/stable/c/9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3","https://git.kernel.org/stable/c/a6d44f477000c6352de6b05e9e276e62083e5fbf"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-53314","score":0.00118,"percentile":0.01722,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}