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net/mlx5: fw_tracer, Validate format string parameters

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fw_tracer, Validate format string parameters Add validation for format string parameters in the firmware tracer to prevent potential security vulnerabilities and crashes from malformed format strings received from firmware. The firmware tracer receives format strings from the device firmware and uses them to format trace messages. Without proper validation, bad firmware could provide format strings with invalid format specifiers (e.g., %s, %p, %n) that could lead to crashes, or other undefined behavior. Add mlx5_tracer_validate_params() to validate that all format specifiers in trace strings are limited to safe integer/hex formats (%x, %d, %i, %u, %llx, %lx, etc.). Reject strings containing other format types that could be used to access arbitrary memory or cause crashes. Invalid format strings are added to the trace output for visibility with "BAD_FORMAT: " prefix.

Announced Source revision 1
Original source ↗

CVE-2025-68816

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-68816

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "95624b731c490a4b849844269193a233d6d556a0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "768d559f466cdd72849110a7ecd76a21d52dcfe3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "38ac688b52ef26a88f8bc4fe26d24fdd0ff91e5d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "8ac688c0e430dab19f6a9b70df94b1f635612c1a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "45bd283b1d69e2c97cddcb9956f0e0261fc4efd7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "8c35c2448086870509ede43947845be0833251f0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
        "lessThan": "b35966042d20b14e2d83330049f77deec5229749",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c",
      "drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.19"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.19",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.248",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.198",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.120",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.64",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.3",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c",
      "drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-68816

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#39133 · Revision 1
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Publisher date
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