CVE-2024-42151

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1479eaff1f16983d8fda7c5a08a586c21891087d	Patch
https://git.kernel.org/stable/c/7f79097b0de97a486b137b750d7dd7b20b519d23	Patch
https://git.kernel.org/stable/c/1479eaff1f16983d8fda7c5a08a586c21891087d	Patch
https://git.kernel.org/stable/c/7f79097b0de97a486b137b750d7dd7b20b519d23	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-07-30 08:15

Updated : 2024-12-09 23:09

NVD link : CVE-2024-42151

Mitre link : CVE-2024-42151

CVE.ORG link : CVE-2024-42151

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2024-42151", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-07-30T08:15:06.690", "references": [{"url": "https://git.kernel.org/stable/c/1479eaff1f16983d8fda7c5a08a586c21891087d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7f79097b0de97a486b137b750d7dd7b20b519d23", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1479eaff1f16983d8fda7c5a08a586c21891087d", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/7f79097b0de97a486b137b750d7dd7b20b519d23", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable\n\nTest case dummy_st_ops/dummy_init_ret_value passes NULL as the first\nparameter of the test_1() function. Mark this parameter as nullable to\nmake verifier aware of such possibility.\nOtherwise, NULL check in the test_1() code:\n\n SEC(\"struct_ops/test_1\")\n int BPF_PROG(test_1, struct bpf_dummy_ops_state *state)\n {\n if (!state)\n return ...;\n\n ... access state ...\n }\n\nMight be removed by verifier, thus triggering NULL pointer dereference\nunder certain conditions."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: marcar el par\u00e1metro bpf_dummy_struct_ops.test_1 como anulable Caso de prueba dummy_st_ops/dummy_init_ret_value pasa NULL como primer par\u00e1metro de la funci\u00f3n test_1(). Marque este par\u00e1metro como anulable para que el verificador sea consciente de tal posibilidad. De lo contrario, NULL verifica el c\u00f3digo test_1(): SEC(\"struct_ops/test_1\") int BPF_PROG(test_1, struct bpf_dummy_ops_state *state) { if (!state) return...; ... estado de acceso ... } El verificador podr\u00eda eliminarlo, lo que provocar\u00eda la desreferencia del puntero NULL bajo ciertas condiciones."}], "lastModified": "2024-12-09T23:09:53.587", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EDD11F94-D8F3-477D-931C-7806D6E5D6D3", "versionEndExcluding": "6.9.9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}