摘要:
In the Linux kernel, the following vulnerability has been resolved:
libbpf: Prevent null-pointer dereference when prog to load has no BTF
In bpf_objec_load_prog(), there's no guarantee that obj->btf is non-NULL
when passing it to btf__fd(), and this function does not perform any
check before dereferencing its argument (as bpf_object__btf_fd() used to
do). As a consequence, we get segmentation fault errors in bpftool (for
example) when trying to load programs that come without BTF information.
v2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().
安全等级: Low
公告ID: KylinSec-SA-2024-2851
发布日期: 2024年6月21日
关联CVE: CVE-2024-38574
In the Linux kernel, the following vulnerability has been resolved:
libbpf: Prevent null-pointer dereference when prog to load has no BTF
In bpf_objec_load_prog(), there's no guarantee that obj->btf is non-NULL
when passing it to btf__fd(), and this function does not perform any
check before dereferencing its argument (as bpf_object__btf_fd() used to
do). As a consequence, we get segmentation fault errors in bpftool (for
example) when trying to load programs that come without BTF information.
v2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2024-38574 | KY3.4-5A | kernel | Unaffected |
| CVE-2024-38574 | KY3.5.2 | kernel | Unaffected |
| CVE-2024-38574 | V6 | kernel | Unaffected |
