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().
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
git.kernel.org/linus/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb (6.10-rc1)
git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0
git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb
git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104
launchpad.net/bugs/cve/CVE-2024-38574
nvd.nist.gov/vuln/detail/CVE-2024-38574
security-tracker.debian.org/tracker/CVE-2024-38574
www.cve.org/CVERecord?id=CVE-2024-38574