cbcvebase.
CVE-2024-58060
published 2025-03-06

CVE-2024-58060: In the Linux kernel, the following vulnerability has been resolved: bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing…

PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.19%
9.2th percentile
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing There is a UAF report in the bpf_struct_ops when CONFIG_MODULES=n. In particular, the report is on tcp_congestion_ops that has a "struct module *owner" member. For struct_ops that has a "struct module *owner" member, it can be extended either by the regular kernel module or by the bpf_struct_ops. bpf_try_module_get() will be used to do the refcounting and different refcount is done based on the owner pointer. When CONFIG_MODULES=n, the btf_id of the "struct module" is missing: WARN: resolve_btfids: unresolved symbol module Thus, the bpf_try_module_get() cannot do the correct refcounting. Not all subsystem's struct_ops requires the "struct module *owner" member. e.g. the recent sched_ext_ops. This patch is to disable bpf_struct_ops registration if the struct_ops has the "struct module *" member and the "struct module" btf_id is missing. The btf_type_is_fwd() helper is moved to the btf.h header file for this test. This has happened since the beginning of bpf_struct_ops which has gone through many changes. The Fixes tag is set to a recent commit that this patch can apply cleanly. Considering CONFIG_MODULES=n is not common and the age of the issue, targeting for bpf-next also.

Affected

9 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.13-1 (forky)linux 6.12.13-1 (forky)
linuxlinux
linuxlinux>= 1611603537a4b88cec7993f32b70c03113801a46 < b777b14c2a4a4e2322daf8e8ffd42d2b88831b17b777b14c2a4a4e2322daf8e8ffd42d2b88831b17
linuxlinux>= 1611603537a4b88cec7993f32b70c03113801a46 < 2324fb4e92092837ee278fdd8d60c48ee1a619ce2324fb4e92092837ee278fdd8d60c48ee1a619ce
linuxlinux>= 1611603537a4b88cec7993f32b70c03113801a46 < 96ea081ed52bf077cad6d00153b6fba68e51076796ea081ed52bf077cad6d00153b6fba68e510767
linuxlinux_kernel>= 0 < 6.12.13-16.12.13-1
linuxlinux_kernel>= 0 < 6.12.13-16.12.13-1
linuxlinux_kernel>= 6.13 < 6.13.26.13.2
linuxlinux_kernel>= 6.9 < 6.12.136.12.13

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
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