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CVE-2024-38555 (GCVE-0-2024-38555)

Vulnerability from cvelistv5 – Published: 2024-06-19 13:35 – Updated: 2026-08-05 11:32
VLAI
Title
net/mlx5: Discard command completions in internal error
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Discard command completions in internal error Fix use after free when FW completion arrives while device is in internal error state. Avoid calling completion handler in this case, since the device will flush the command interface and trigger all completions manually. Kernel log: ------------[ cut here ]------------ refcount_t: underflow; use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Call Trace: <IRQ> ? __warn+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0 ? report_bug+0x17c/0x190 ? handle_bug+0x3c/0x60 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core] __handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230 __common_interrupt+0x3b/0xa0 common_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:14 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 27c79b3a9212cf4ba634c157e07d29548181a208 , < f6fbb8535e990f844371086ab2c1221f71f993d3 (git)
Affected: 51d138c2610a236c1ed0059d034ee4c74f452b86 , < 3cb92b0ad73d3f1734e812054e698d655e9581b0 (git)
Affected: 51d138c2610a236c1ed0059d034ee4c74f452b86 , < bf8aaf0ae01c27ae3c06aa8610caf91e50393396 (git)
Affected: 51d138c2610a236c1ed0059d034ee4c74f452b86 , < 1337ec94bc5a9eed250e33f5f5c89a28a6bfabdb (git)
Affected: 51d138c2610a236c1ed0059d034ee4c74f452b86 , < 1d5dce5e92a70274de67a59e1e674c3267f94cd7 (git)
Affected: 51d138c2610a236c1ed0059d034ee4c74f452b86 , < 7ac4c69c34240c6de820492c0a28a0bd1494265a (git)
Affected: 51d138c2610a236c1ed0059d034ee4c74f452b86 , < db9b31aa9bc56ff0d15b78f7e827d61c4a096e40 (git)
Affected: 2e5d24b3bf091802c5456dc8f8f6a6be4493c8ca (git)
Affected: 5.10.20 , < 5.10.219 (semver)
Affected: 5.11.3 , < 5.12 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.10.219 , ≤ 5.10.* (semver)
Unaffected: 5.15.161 , ≤ 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)
guessed Create a notification for this product.
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Se corrige el use-after-free cuando llega la finalizaci\u00f3n del FW mientras el dispositivo est\u00e1 en estado de error interno. Evite llamar al controlador de finalizaci\u00f3n en este caso, ya que el dispositivo limpiar\u00e1 la interfaz de comando y activar\u00e1 todas las finalizaciones manualmente. Registro del kernel: ------------[ cortar aqu\u00ed ]------------ refcount_t: underflow; use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Seguimiento de llamadas: ? __advertir+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0? report_bug+0x17c/0x190? handle_bug+0x3c/0x60? exc_invalid_op+0x14/0x70? asm_exc_invalid_op+0x16/0x20? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 cadena+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35 /0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core] __handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230 __common_interrupt+0x3b/0 xa0 interrupci\u00f3n_com\u00fan+0x7b/0xa0   asm_interrupci\u00f3n_com\u00fan+0x22 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T18:57:12+00:00",
      "cve": "CVE-2024-38555",
      "id": "CVE-2024-38555",
      "initial_release_date": "2024-06-19T00:00:00+00:00",
      "product_status:fixed": "1210",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "30",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/mlx5: Discard command completions in internal error",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-38555.json",
      "version": "3"
    },
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Avoid calling completion handler in this case,\\nsince the device will flush the command interface and trigger all\\ncompletions manually.\\n\\nKernel log:\\n------------[ cut here ]------------\\nrefcount_t: underflow; use-after-free.\\n...\\nRIP: 0010:refcount_warn_saturate+0xd8/0xe0\\n...\\nCall Trace:\\n\u003cIRQ\u003e\\n? __warn+0x79/0x120\\n? refcount_warn_saturate+0xd8/0xe0\\n? report_bug+0x17c/0x190\\n? handle_bug+0x3c/0x60\\n? exc_invalid_op+0x14/0x70\\n? asm_exc_invalid_op+0x16/0x20\\n? refcount_warn_saturate+0xd8/0xe0\\ncmd_ent_put+0x13b/0x160 [mlx5_core]\\nmlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core]\\ncmd_comp_notifier+0x1f/0x30 [mlx5_core]\\nnotifier_call_chain+0x35/0xb0\\natomic_notifier_call_chain+0x16/0x20\\nmlx5_eq_async_int+0xf6/0x290 [mlx5_core]\\nnotifier_call_chain+0x35/0xb0\\natomic_notifier_call_chain+0x16/0x20\\nirq_int_handler+0x19/0x30 [mlx5_core]\\n__handle_irq_event_percpu+0x4b/0x160\\nhandle_irq_event+0x2e/0x80\\nhandle_edge_irq+0x98/0x230\\n__common_interrupt+0x3b/0xa0\\ncommon_interrupt+0x7b/0xa0\\n\u003c/IRQ\u003e\\n\u003cTASK\u003e\\nasm_common_interrupt+0x22/0x40\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.219\", \"versionStartIncluding\": \"5.10.20\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.161\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.93\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.12\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.3\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.11.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:48:40.659Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-38555\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:48:40.659Z\", \"dateReserved\": \"2024-06-18T19:36:34.920Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T13:35:26.059Z\", \"assignerShortName\": \"Linux\"}",
      "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.

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.