cve-2024-27050
Vulnerability from cvelistv5
Published
2024-05-01 12:54
Modified
2024-08-02 00:21
Severity
5.5 (Medium) - cvssV3_1 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
libbpf: Use OPTS_SET() macro in bpf_xdp_query()
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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              "baseScore": 5.5,
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              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
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                "description": "CWE-787 Out-of-bounds Write",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Use OPTS_SET() macro in bpf_xdp_query()\n\nWhen the feature_flags and xdp_zc_max_segs fields were added to the libbpf\nbpf_xdp_query_opts, the code writing them did not use the OPTS_SET() macro.\nThis causes libbpf to write to those fields unconditionally, which means\nthat programs compiled against an older version of libbpf (with a smaller\nsize of the bpf_xdp_query_opts struct) will have its stack corrupted by\nlibbpf writing out of bounds.\n\nThe patch adding the feature_flags field has an early bail out if the\nfeature_flags field is not part of the opts struct (via the OPTS_HAS)\nmacro, but the patch adding xdp_zc_max_segs does not. For consistency, this\nfix just changes the assignments to both fields to use the OPTS_SET()\nmacro."
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-27050",
    "datePublished": "2024-05-01T12:54:35.555Z",
    "dateReserved": "2024-02-19T14:20:24.213Z",
    "dateUpdated": "2024-08-02T00:21:05.913Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-27050\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T13:15:50.070\",\"lastModified\":\"2024-07-03T01:50:17.020\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibbpf: Use OPTS_SET() macro in bpf_xdp_query()\\n\\nWhen the feature_flags and xdp_zc_max_segs fields were added to the libbpf\\nbpf_xdp_query_opts, the code writing them did not use the OPTS_SET() macro.\\nThis causes libbpf to write to those fields unconditionally, which means\\nthat programs compiled against an older version of libbpf (with a smaller\\nsize of the bpf_xdp_query_opts struct) will have its stack corrupted by\\nlibbpf writing out of bounds.\\n\\nThe patch adding the feature_flags field has an early bail out if the\\nfeature_flags field is not part of the opts struct (via the OPTS_HAS)\\nmacro, but the patch adding xdp_zc_max_segs does not. For consistency, this\\nfix just changes the assignments to both fields to use the OPTS_SET()\\nmacro.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: libbpf: use la macro OPTS_SET() en bpf_xdp_query() Cuando los campos feature_flags y xdp_zc_max_segs se agregaron a libbpf bpf_xdp_query_opts, el c\u00f3digo que los escribi\u00f3 no us\u00f3 la macro OPTS_SET(). Esto hace que libbpf escriba en esos campos incondicionalmente, lo que significa que los programas compilados con una versi\u00f3n anterior de libbpf (con un tama\u00f1o m\u00e1s peque\u00f1o de la estructura bpf_xdp_query_opts) tendr\u00e1n su pila da\u00f1ada por la escritura de libbpf fuera de los l\u00edmites. El parche que agrega el campo feature_flags tiene un rescate anticipado si el campo feature_flags no es parte de la estructura opts (a trav\u00e9s de la macro OPTS_HAS), pero el parche que agrega xdp_zc_max_segs no lo hace. Para mantener la coherencia, esta soluci\u00f3n simplemente cambia las asignaciones a ambos campos para usar la macro OPTS_SET().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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