CVE-2024-35902 (GCVE-0-2024-35902)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2025-05-04 12:56
VLAI?
Title
net/rds: fix possible cp null dereference
Summary
In the Linux kernel, the following vulnerability has been resolved: net/rds: fix possible cp null dereference cp might be null, calling cp->cp_conn would produce null dereference [Simon Horman adds:] Analysis: * cp is a parameter of __rds_rdma_map and is not reassigned. * The following call-sites pass a NULL cp argument to __rds_rdma_map() - rds_get_mr() - rds_get_mr_for_dest * Prior to the code above, the following assumes that cp may be NULL (which is indicative, but could itself be unnecessary) 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); * The code modified by this patch is guarded by IS_ERR(trans_private), where trans_private is assigned as per the previous point in this analysis. The only implementation of get_mr that I could locate is rds_ib_get_mr() which can return an ERR_PTR if the conn (4th) argument is NULL. * ret is set to PTR_ERR(trans_private). rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL. Thus ret may be -ENODEV in which case the code in question will execute. Conclusion: * cp may be NULL at the point where this patch adds a check; this patch does seem to address a possible bug
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 786854141057751bc08eb26f1b02e97c1631c8f4 , < d275de8ea7be3a453629fddae41d4156762e814c (git)
Affected: 997efea2bf3a4adb96c306b9ad6a91442237bf5b , < bcd46782e2ec3825d10c1552fcb674d491cc09f9 (git)
Affected: 9dfc15a10dfd44f8ff7f27488651cb5be6af83c2 , < cfb786b03b03c5ff38882bee38525eb9987e4d14 (git)
Affected: b562ebe21ed9adcf42242797dd6cb75beef12bf0 , < d49fac38479bfdaec52b3ea274d290c47a294029 (git)
Affected: 998fd719e6d6468b930ac0c44552ea9ff8b07b80 , < cbaac2e5488ed54833897264a5ffb2a341a9f196 (git)
Affected: 2b505d05280739ce31d5708da840f42df827cb85 , < 92309bed3c5fbe2ccd4c45056efd42edbd06162d (git)
Affected: c055fc00c07be1f0df7375ab0036cebd1106ed38 , < 6794090c742008c53b344b35b021d4a3093dc50a (git)
Affected: c055fc00c07be1f0df7375ab0036cebd1106ed38 , < 62fc3357e079a07a22465b9b6ef71bb6ea75ee4b (git)
Affected: 907761307469adecb02461a14120e9a1812a5fb1 (git)
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    Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 4.19.312 , ≤ 4.19.* (semver)
Unaffected: 5.4.274 , ≤ 5.4.* (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.154 , ≤ 5.15.* (semver)
Unaffected: 6.1.85 , ≤ 6.1.* (semver)
Unaffected: 6.6.26 , ≤ 6.6.* (semver)
Unaffected: 6.8.5 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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\"unaffected\", \"version\": \"4.19.312\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.274\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.215\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.154\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.85\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.26\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/rds/rdma.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c\"}, {\"url\": \"https://git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9\"}, {\"url\": \"https://git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14\"}, {\"url\": \"https://git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029\"}, {\"url\": \"https://git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196\"}, {\"url\": \"https://git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d\"}, {\"url\": \"https://git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a\"}, {\"url\": \"https://git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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-\u003ecp_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-\u003ers_transport-\u003eget_mr(\\n\\t\\tsg, nents, rs, \u0026mr-\u003er_key, cp ? cp-\u003ecp_conn : NULL,\\n\\t\\targs-\u003evec.addr, args-\u003evec.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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.312\", \"versionStartIncluding\": \"4.19.310\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.274\", \"versionStartIncluding\": \"5.4.272\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"5.10.213\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"5.15.152\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.85\", \"versionStartIncluding\": \"6.1.82\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.26\", \"versionStartIncluding\": \"6.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.5\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.7.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:08:00.940Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35902\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:08:00.940Z\", \"dateReserved\": \"2024-05-17T13:50:33.114Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-19T08:34:55.692Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.