CVE-2024-42151: bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable
First published: Tue Jul 30 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.115-1<=6.1.112-1 | 6.11.7-1 6.11.9-1 |
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Reference Links
- https://git.kernel.org/stable/c/1479eaff1f16983d8fda7c5a08a586c21891087d
- https://git.kernel.org/stable/c/7f79097b0de97a486b137b750d7dd7b20b519d23
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-42151
- https://nvd.nist.gov/vuln/detail/CVE-2024-42151
- https://launchpad.net/bugs/cve/CVE-2024-42151
- https://security-tracker.debian.org/tracker/CVE-2024-42151
- https://ubuntu.com/security/CVE-2024-42151
- https://git.kernel.org/linus/1479eaff1f16983d8fda7c5a08a586c21891087d
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