In the Linux kernel, the following vulnerability has been resolved:
bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable
Test case dummy_st_ops/dummy_init_ret_value passes NULL as the first
parameter of the test_1() function. Mark this parameter as nullable to
make verifier aware of such possibility.
Otherwise, NULL check in the test_1() code:
SEC(“struct_ops/test_1”)
int BPF_PROG(test_1, struct bpf_dummy_ops_state *state)
{
if (!state)
return …;
… access state …
}
Might be removed by verifier, thus triggering NULL pointer dereference
under certain conditions.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/1479eaff1f16983d8fda7c5a08a586c21891087d (6.10-rc1)
git.kernel.org/stable/c/1479eaff1f16983d8fda7c5a08a586c21891087d
git.kernel.org/stable/c/7f79097b0de97a486b137b750d7dd7b20b519d23
launchpad.net/bugs/cve/CVE-2024-42151
nvd.nist.gov/vuln/detail/CVE-2024-42151
security-tracker.debian.org/tracker/CVE-2024-42151
www.cve.org/CVERecord?id=CVE-2024-42151