cve-2024-56675
Vulnerability from cvelistv5
Published
2024-12-27 15:06
Modified
2025-02-10 17:21
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, 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 normal RCU grace period does not imply a tasks-trace-RCU grace period. Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5Patch
Impacted products
Vendor Product Version
Linux Linux Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
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   Linux Linux Version: 6.0
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