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CVE-2024-56717 (GCVE-0-2024-56717)

Vulnerability from cvelistv5 – Published: 2024-12-29 08:48 – Updated: 2026-08-05 11:46
VLAI
Title
net: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic() Packets injected by the CPU should have a SRC_PORT field equal to the CPU port module index in the Analyzer block (ocelot->num_phys_ports). The blamed commit copied the ocelot_ifh_set_basic() call incorrectly from ocelot_xmit_common() in net/dsa/tag_ocelot.c. Instead of calling with "x", it calls with BIT_ULL(x), but the field is not a port mask, but rather a single port index. [ side note: this is the technical debt of code duplication :( ] The error used to be silent and doesn't appear to have other user-visible manifestations, but with new changes in the packing library, it now fails loudly as follows: ------------[ cut here ]------------ Cannot store 0x40 inside bits 46-43 - will truncate sja1105 spi2.0: xmit timed out WARNING: CPU: 1 PID: 102 at lib/packing.c:98 __pack+0x90/0x198 sja1105 spi2.0: timed out polling for tstamp CPU: 1 UID: 0 PID: 102 Comm: felix_xmit Tainted: G W N 6.13.0-rc1-00372-gf706b85d972d-dirty #2605 Call trace: __pack+0x90/0x198 (P) __pack+0x90/0x198 (L) packing+0x78/0x98 ocelot_ifh_set_basic+0x260/0x368 ocelot_port_inject_frame+0xa8/0x250 felix_port_deferred_xmit+0x14c/0x258 kthread_worker_fn+0x134/0x350 kthread+0x114/0x138 The code path pertains to the ocelot switchdev driver and to the felix secondary DSA tag protocol, ocelot-8021q. Here seen with ocelot-8021q. The messenger (packing) is not really to blame, so fix the original commit instead.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:58 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 06bcb9032e05ad717f9fd0a6e2fd3ae7f430fa31 , < 59c4ca8d8d7918eb6e2df91d2c254827264be309 (git)
Affected: ff7f554bbd75d5cbf00cded81d05147c6617e876 , < 2f3c62ffe88116cd2a39cd73e01103535599970f (git)
Affected: e1b9e80236c540fa85d76e2d510d1b38e1968c5d , < a8836eae3288c351acd3b2743d2fad2a4ee2bd56 (git)
Affected: e1b9e80236c540fa85d76e2d510d1b38e1968c5d , < 2d5df3a680ffdaf606baa10636bdb1daf757832e (git)
Affected: be3a532167dd562ec38900c846e7ae6cc39aa2f1 (git)
Affected: 6.1.107 , < 6.1.122 (semver)
Affected: 6.6.48 , < 6.6.68 (semver)
Affected: 6.10.7 , < 6.11 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.1.122 , ≤ 6.1.* (semver)
Unaffected: 6.6.68 , ≤ 6.6.* (semver)
Unaffected: 6.12.7 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: mscc: ocelot: se corrige el campo IFH SRC_PORT incorrecto en ocelot_ifh_set_basic() Los paquetes inyectados por la CPU deben tener un campo SRC_PORT igual al \u00edndice del m\u00f3dulo de puerto de la CPU en el bloque Analyzer (ocelot-\u0026gt;num_phys_ports). el commit culpable copi\u00f3 la llamada ocelot_ifh_set_basic() incorrectamente desde ocelot_xmit_common() en net/dsa/tag_ocelot.c. En lugar de llamar con \"x\", llama con BIT_ULL(x), pero el campo no es una m\u00e1scara de puerto, sino un \u00edndice de puerto \u00fanico. [ nota al margen: esta es la deuda t\u00e9cnica de la duplicaci\u00f3n de c\u00f3digo :( ] El error sol\u00eda ser silencioso y no parece tener otras manifestaciones visibles para el usuario, pero con los nuevos cambios en la librer\u00eda de empaquetado, ahora falla ruidosamente de la siguiente manera: ------------[ cortar aqu\u00ed ]------------ No se puede almacenar 0x40 dentro de los bits 46-43 - truncar\u00e1 sja1105 spi2.0: xmit timed out WARNING: CPU: 1 PID: 102 at lib/packing.c:98 __pack+0x90/0x198 sja1105 spi2.0: timed out polling for tstamp CPU: 1 UID: 0 PID: 102 Comm: felix_xmit Tainted: GWN 6.13.0-rc1-00372-gf706b85d972d-dirty #2605 Rastreo de llamadas: __pack+0x90/0x198 (P) __pack+0x90/0x198 (L) packing+0x78/0x98 ocelot_ifh_set_basic+0x260/0x368 ocelot_port_inject_frame+0xa8/0x250 felix_port_deferred_xmit+0x14c/0x258 kthread_worker_fn+0x134/0x350 kthread+0x114/0x138 La ruta del c\u00f3digo pertenece al controlador switchdev de ocelot y al protocolo de etiqueta DSA secundaria de felix, ocelot-8021q. Aqu\u00ed se ve con ocelot-8021q. El mensajero (packing) no es realmente el culpable, as\u00ed que arregle el commit original en su lugar."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic()\n\nPackets injected by the CPU should have a SRC_PORT field equal to the\nCPU port module index in the Analyzer block (ocelot-\u003enum_phys_ports).\n\nThe blamed commit copied the ocelot_ifh_set_basic() call incorrectly\nfrom ocelot_xmit_common() in net/dsa/tag_ocelot.c. Instead of calling\nwith \"x\", it calls with BIT_ULL(x), but the field is not a port mask,\nbut rather a single port index.\n\n[ side note: this is the technical debt of code duplication :( ]\n\nThe error used to be silent and doesn\u0027t appear to have other\nuser-visible manifestations, but with new changes in the packing\nlibrary, it now fails loudly as follows:\n\n------------[ cut here ]------------\nCannot store 0x40 inside bits 46-43 - will truncate\nsja1105 spi2.0: xmit timed out\nWARNING: CPU: 1 PID: 102 at lib/packing.c:98 __pack+0x90/0x198\nsja1105 spi2.0: timed out polling for tstamp\nCPU: 1 UID: 0 PID: 102 Comm: felix_xmit\nTainted: G        W        N 6.13.0-rc1-00372-gf706b85d972d-dirty #2605\nCall trace:\n __pack+0x90/0x198 (P)\n __pack+0x90/0x198 (L)\n packing+0x78/0x98\n ocelot_ifh_set_basic+0x260/0x368\n ocelot_port_inject_frame+0xa8/0x250\n felix_port_deferred_xmit+0x14c/0x258\n kthread_worker_fn+0x134/0x350\n kthread+0x114/0x138\n\nThe code path pertains to the ocelot switchdev driver and to the felix\nsecondary DSA tag protocol, ocelot-8021q. Here seen with ocelot-8021q.\n\nThe messenger (packing) is not really to blame, so fix the original\ncommit instead."
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            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: mscc: ocelot: se corrige el campo IFH SRC_PORT incorrecto en ocelot_ifh_set_basic() Los paquetes inyectados por la CPU deben tener un campo SRC_PORT igual al \u00edndice del m\u00f3dulo de puerto de la CPU en el bloque Analyzer (ocelot-\u0026gt;num_phys_ports). el commit culpable copi\u00f3 la llamada ocelot_ifh_set_basic() incorrectamente desde ocelot_xmit_common() en net/dsa/tag_ocelot.c. En lugar de llamar con \"x\", llama con BIT_ULL(x), pero el campo no es una m\u00e1scara de puerto, sino un \u00edndice de puerto \u00fanico. [ nota al margen: esta es la deuda t\u00e9cnica de la duplicaci\u00f3n de c\u00f3digo :( ] El error sol\u00eda ser silencioso y no parece tener otras manifestaciones visibles para el usuario, pero con los nuevos cambios en la librer\u00eda de empaquetado, ahora falla ruidosamente de la siguiente manera: ------------[ cortar aqu\u00ed ]------------ No se puede almacenar 0x40 dentro de los bits 46-43 - truncar\u00e1 sja1105 spi2.0: xmit timed out WARNING: CPU: 1 PID: 102 at lib/packing.c:98 __pack+0x90/0x198 sja1105 spi2.0: timed out polling for tstamp CPU: 1 UID: 0 PID: 102 Comm: felix_xmit Tainted: GWN 6.13.0-rc1-00372-gf706b85d972d-dirty #2605 Rastreo de llamadas: __pack+0x90/0x198 (P) __pack+0x90/0x198 (L) packing+0x78/0x98 ocelot_ifh_set_basic+0x260/0x368 ocelot_port_inject_frame+0xa8/0x250 felix_port_deferred_xmit+0x14c/0x258 kthread_worker_fn+0x134/0x350 kthread+0x114/0x138 La ruta del c\u00f3digo pertenece al controlador switchdev de ocelot y al protocolo de etiqueta DSA secundaria de felix, ocelot-8021q. Aqu\u00ed se ve con ocelot-8021q. El mensajero (packing) no es realmente el culpable, as\u00ed que arregle el commit original en su lugar."
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                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "6.10.7",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic()\n\nPackets injected by the CPU should have a SRC_PORT field equal to the\nCPU port module index in the Analyzer block (ocelot-\u003enum_phys_ports).\n\nThe blamed commit copied the ocelot_ifh_set_basic() call incorrectly\nfrom ocelot_xmit_common() in net/dsa/tag_ocelot.c. Instead of calling\nwith \"x\", it calls with BIT_ULL(x), but the field is not a port mask,\nbut rather a single port index.\n\n[ side note: this is the technical debt of code duplication :( ]\n\nThe error used to be silent and doesn\u0027t appear to have other\nuser-visible manifestations, but with new changes in the packing\nlibrary, it now fails loudly as follows:\n\n------------[ cut here ]------------\nCannot store 0x40 inside bits 46-43 - will truncate\nsja1105 spi2.0: xmit timed out\nWARNING: CPU: 1 PID: 102 at lib/packing.c:98 __pack+0x90/0x198\nsja1105 spi2.0: timed out polling for tstamp\nCPU: 1 UID: 0 PID: 102 Comm: felix_xmit\nTainted: G        W        N 6.13.0-rc1-00372-gf706b85d972d-dirty #2605\nCall trace:\n __pack+0x90/0x198 (P)\n __pack+0x90/0x198 (L)\n packing+0x78/0x98\n ocelot_ifh_set_basic+0x260/0x368\n ocelot_port_inject_frame+0xa8/0x250\n felix_port_deferred_xmit+0x14c/0x258\n kthread_worker_fn+0x134/0x350\n kthread+0x114/0x138\n\nThe code path pertains to the ocelot switchdev driver and to the felix\nsecondary DSA tag protocol, ocelot-8021q. Here seen with ocelot-8021q.\n\nThe messenger (packing) is not really to blame, so fix the original\ncommit instead."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:N - The vulnerable code is the transmit/injection path of an Ethernet switch driver, reached whenever the kernel emits a frame on an ocelot/felix port \u2014 including replies to unauthenticated remote traffic (ARP/ICMP/TCP) and routed traffic, and specifically the ocelot-8021q PTP response path shown in the reported stack trace, where a remote PTP peer\u0027s Delay_Req elicits the injection.\nAC:L - The defect is unconditional and deterministic \u2014 every CPU-injected frame on affected hardware passes the out-of-range value to the packing helper, requiring no race, no memory grooming, and no state the attacker cannot induce.\nPR:N - No credentials or privileges are required; an unauthenticated remote peer that causes the device to transmit a single frame out an ocelot port (PTP exchange, ARP, ping, forwarded traffic) reaches the code, and locally the path is the ordinary ndo_start_xmit with no capability check.\nUI:N - No victim action is needed \u2014 normal packet transmission, which the attacker can induce remotely, is sufficient to reach the faulty field encoding.\nS:U - The fault and its consequences stay within the kernel\u0027s own security authority on the affected host; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The injection frame header is a fixed 16-byte stack buffer written at compile-time-constant bit offsets, and the packing helper rejects/masks the oversized value, so no out-of-bounds read occurs and no kernel data is disclosed.\nI:N - No memory is corrupted and no attacker-controlled data is modified; the only altered state is a switch metadata field that was already zero before the offending commit, so there is no exploitable write or data-integrity loss.\nA:H - Each injected frame hits an unconditional WARN() (not WARN_ONCE) in the packing library, producing a stack dump per transmitted packet \u2014 this taints the kernel, floods the log and cripples throughput on embedded switch platforms, and panics outright on systems configured with panic_on_warn, all repeatable at will by a remote peer."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:46:14.927Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/59c4ca8d8d7918eb6e2df91d2c254827264be309"
            },
            {
              "url": "https://git.kernel.org/stable/c/2f3c62ffe88116cd2a39cd73e01103535599970f"
            },
            {
              "url": "https://git.kernel.org/stable/c/a8836eae3288c351acd3b2743d2fad2a4ee2bd56"
            },
            {
              "url": "https://git.kernel.org/stable/c/2d5df3a680ffdaf606baa10636bdb1daf757832e"
            }
          ],
          "title": "net: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56717",
        "datePublished": "2024-12-29T08:48:49.958Z",
        "dateReserved": "2024-12-27T15:00:39.858Z",
        "dateUpdated": "2026-08-05T11:46:14.927Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.