CVE-2024-38544 (GCVE-0-2024-38544)

Vulnerability from cvelistv5 – Published: 2024-06-19 13:35 – Updated: 2026-08-05 11:32
VLAI
Title
RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale. This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.3 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < c91fb72a2ca6480d8d77262eef52dc5b178463a3 (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < de5a059e36657442b5637cc16df5163e435b9cb4 (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < e0e14dd35d4242340c7346aac60c7ff8fbf87ffc (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19 (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < 21b4c6d4d89030fd4657a8e7c8110fd941049794 (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < bbad88f111a1829f366c189aa48e7e58e57553fc (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < 30df4bef8b8e183333e9b6e9d4509d552c7da6eb (git)
Affected: 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 , < 2b23b6097303ed0ba5f4bc036a1c07b6027af5c6 (git)
Create a notification for this product.
Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.93 , ≤ 6.1.* (semver)
Unaffected: 6.6.33 , ≤ 6.6.* (semver)
Unaffected: 6.8.12 , ≤ 6.8.* (semver)
Unaffected: 6.9.3 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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This has been observed\\ninfrequently in testing at high scale.\\n\\nThis patch fixes this by changing the order of enqueuing the packet until\\nafter the counter is accessed.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: RDMA/rxe: corrige la falla de segmentaci\u00f3n en rxe_comp_queue_pkt En rxe_comp_queue_pkt(), un paquete de respuesta entrante skb se pone en cola en la cola resp_pkts y luego se toma una decisi\u00f3n si se ejecuta la tarea de finalizaci\u00f3n en l\u00ednea o programarla. Finalmente, se elimina la referencia al skb para aumentar un contador de rendimiento \u0027hw\u0027. Esto es incorrecto porque si la tarea de finalizaci\u00f3n ya se est\u00e1 ejecutando en un hilo separado, es posible que ya haya procesado el skb y lo haya liberado, lo que puede causar una falla de segmentaci\u00f3n. Esto se ha observado con poca frecuencia en pruebas a gran escala. Este parche soluciona este problema cambiando el orden de poner en cola el paquete hasta que se accede al 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      "current_release_date": "2026-08-04T18:52:29+00:00",
      "cve": "CVE-2024-38544",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-38544.json",
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Finally the skb is dereferenced to bump a \u0027hw\u0027\\nperformance counter. This is wrong because if the completer task is\\nalready running in a separate thread it may have already processed the skb\\nand freed it which can cause a seg fault.  This has been observed\\ninfrequently in testing at high scale.\\n\\nThis patch fixes this by changing the order of enqueuing the packet until\\nafter the counter is accessed.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.93\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.12\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.3\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"4.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:32:41.788Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-38544\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:32:41.788Z\", \"dateReserved\": \"2024-06-18T19:36:34.919Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T13:35:18.676Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.