CVE-2024-38574
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-38574
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-38574.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-38574
- Downstream
- Published
- 2024-06-19T13:35:39Z
- Modified
- 2025-10-17T07:28:40.162109Z
- Summary
- libbpf: Prevent null-pointer dereference when prog to load has no BTF
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
libbpf: Prevent null-pointer dereference when prog to load has no BTF
In bpfobjecloadprog(), there's no guarantee that obj->btf is non-NULL when passing it to btffd(), and this function does not perform any check before dereferencing its argument (as bpfobjectbtf_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 btffd() in the fix instead of reverting to bpfobjectbtffd().
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceddf7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2eFixedef80b59acfa4dee4b5eaccb15572b69248831104
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceddf7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2eFixed1fd91360a75833b7110af9834ae26c977e1273e0
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceddf7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2eFixed9bf48fa19a4b1d186e08b20bf7e5de26a15644fb