{"cve":"CVE-2024-56675","nvd":{"published":"2024-12-27T15:15:27.420","modified":"2026-06-17T08:12:43.233","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors\n\nUprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU\nprotection. But it is possible to attach a non-sleepable BPF program to a\nuprobe, and non-sleepable BPF programs are freed via normal RCU (see\n__bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal\nRCU grace period does not imply a tasks-trace-RCU grace period.\n\nFix it by explicitly waiting for a tasks-trace-RCU grace period after\nremoving the attachment of a bpf_prog to a perf_event.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a","https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d","https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956","https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5","https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:57:56.913276502+00:00"},"epss":{"cve":"CVE-2024-56675","score":0.00229,"percentile":0.13793,"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."]}