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…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
Description
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().
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0Patch
- https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fbPatch
- https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104Patch
- https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0Patch
- https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fbPatch
- https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.