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cve/2024/CVE-2024-56675.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
2025-09-29 21:09:30 +02:00

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CVE-2024-56675

Description

In the Linux kernel, the following vulnerability has been resolved:bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavorsUprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCUprotection. But it is possible to attach a non-sleepable BPF program to auprobe, and non-sleepable BPF programs are freed via normal RCU (see__bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normalRCU grace period does not imply a tasks-trace-RCU grace period.Fix it by explicitly waiting for a tasks-trace-RCU grace period afterremoving the attachment of a bpf_prog to a perf_event.

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