CVE-2024-35902

{"id": "CVE-2024-35902", "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": "2024-05-19T09:15:11.037", "references": [{"url": "https://git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": ["Mailing List"], "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\nnet/rds: fix possible cp null dereference\n\ncp might be null, calling cp->cp_conn would produce null dereference\n\n[Simon Horman adds:]\n\nAnalysis:\n\n* cp is a parameter of __rds_rdma_map and is not reassigned.\n\n* The following call-sites pass a NULL cp argument to __rds_rdma_map()\n\n - rds_get_mr()\n - rds_get_mr_for_dest\n\n* Prior to the code above, the following assumes that cp may be NULL\n (which is indicative, but could itself be unnecessary)\n\n\ttrans_private = rs->rs_transport->get_mr(\n\t\tsg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL,\n\t\targs->vec.addr, args->vec.bytes,\n\t\tneed_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED);\n\n* The code modified by this patch is guarded by IS_ERR(trans_private),\n where trans_private is assigned as per the previous point in this analysis.\n\n The only implementation of get_mr that I could locate is rds_ib_get_mr()\n which can return an ERR_PTR if the conn (4th) argument is NULL.\n\n* ret is set to PTR_ERR(trans_private).\n rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL.\n Thus ret may be -ENODEV in which case the code in question will execute.\n\nConclusion:\n* cp may be NULL at the point where this patch adds a check;\n this patch does seem to address a possible bug"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/rds: corrige la posible desreferencia nula de cp cp podr\u00eda ser nulo, llamar a cp->cp_conn producir\u00eda una desreferencia nula [Simon Horman agrega:] An\u00e1lisis: * cp es un par\u00e1metro de __rds_rdma_map y no es reasignado. * Los siguientes sitios de llamadas pasan un argumento cp NULL a __rds_rdma_map() - rds_get_mr() - rds_get_mr_for_dest * Antes del c\u00f3digo anterior, lo siguiente supone que cp puede ser NULL (lo cual es indicativo, pero podr\u00eda ser innecesario) trans_private = rs ->rs_transport->get_mr( sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL, args->vec.addr, args->vec.bytes, need_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED); * El c\u00f3digo modificado por este parche est\u00e1 custodiado por IS_ERR(trans_private), donde trans_private se asigna seg\u00fan el punto anterior de este an\u00e1lisis. La \u00fanica implementaci\u00f3n de get_mr que pude localizar es rds_ib_get_mr() que puede devolver un ERR_PTR si el argumento conn (cuarto) es NULL. * ret est\u00e1 establecido en PTR_ERR(trans_private). rds_ib_get_mr puede devolver ERR_PTR(-ENODEV) si el argumento de conexi\u00f3n (cuarto) es NULL. Por lo tanto, ret puede ser -ENODEV, en cuyo caso se ejecutar\u00e1 el c\u00f3digo en cuesti\u00f3n. Conclusi\u00f3n: * cp puede ser NULL en el punto donde este parche agrega una verificaci\u00f3n; este parche parece solucionar un posible error "}], "lastModified": "2024-12-30T19:47:46.853", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D02AF2B3-13B5-4802-9DC1-087A7193F503", "versionEndExcluding": "4.19.312", "versionStartIncluding": "4.19.310"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "187C950F-6E78-4831-93AF-B7A15212714E", "versionEndExcluding": "5.7.274", "versionStartIncluding": "5.4.272"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62166690-37B3-4D16-B6A3-E027256C41CD", "versionEndExcluding": "5.10.215", "versionStartIncluding": "5.10.213"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A1282257-6354-4F74-8133-39F1EA6BF816", "versionEndExcluding": "5.15.154", "versionStartIncluding": "5.15.152"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5715EDF1-F50B-4AED-AE96-D3F02AC1F58C", "versionEndExcluding": "6.1.85", "versionStartIncluding": "6.1.82"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C7F6F8E6-ADCB-4F7D-953C-660986B2B9CC", "versionEndExcluding": "6.6.26", "versionStartIncluding": "6.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C0AD733-A1E8-4B50-9321-F886337D5B40", "versionEndExcluding": "6.8.5", "versionStartIncluding": "6.7.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "22BEDD49-2C6D-402D-9DBF-6646F6ECD10B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}