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tracing: Have process_string() also allow arrays

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: tracing: Have process_string() also allow arrays In order to catch a common bug where a TRACE_EVENT() TP_fast_assign() assigns an address of an allocated string to the ring buffer and then references it in TP_printk(), which can be executed hours later when the string is free, the function test_event_printk() runs on all events as they are registered to make sure there's no unwanted dereferencing. It calls process_string() to handle cases in TP_printk() format that has "%s". It returns whether or not the string is safe. But it can have some false positives. For instance, xe_bo_move() has: TP_printk("move_lacks_source:%s, migrate object %p [size %zu] from %s to %s device_id:%s", __entry->move_lacks_source ? "yes" : "no", __entry->bo, __entry->size, xe_mem_type_to_name[__entry->old_placement], xe_mem_type_to_name[__entry->new_placement], __get_str(device_id)) Where the "%s" references into xe_mem_type_to_name[]. This is an array of pointers that should be safe for the event to access. Instead of flagging this as a bad reference, if a reference points to an array, where the record field is the index, consider it safe.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.124, 6.12.9, 6.6.70
CVEs
CVE-2024-57930
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 11:26 UTC · Revision 1

Source evidence

tracing: Have process_string() also allow arrays

core-osv · Original source

Published 21 Jan 2025, 12:01 UTC

In the Linux kernel, the following vulnerability has been resolved: tracing: Have process_string() also allow arrays In order to catch a common bug where a TRACE_EVENT() TP_fast_assign() assigns an address of an allocated string to the ring buffer and then references it in TP_printk(), which can be executed hours later when the string is free, the function test_event_printk() runs on all events as they are registered to make sure there's no unwanted dereferencing. It calls process_string() to handle cases in TP_printk() format that has "%s". It returns whether or not the string is safe. But it can have some false positives. For instance, xe_bo_move() has: TP_printk("move_lacks_source:%s, migrate object %p [size %zu] from %s to %s device_id:%s", __entry->move_lacks_source ? "yes" : "no", __entry->bo, __entry->size, xe_mem_type_to_name[__entry->old_placement], xe_mem_type_to_name[__entry->new_placement], __get_str(device_id)) Where the "%s" references into xe_mem_type_to_name[]. This is an array of pointers that should be safe for the event to access. Instead of flagging this as a bad reference, if a reference points to an array, where the record field is the index, consider it safe.

osv:CVE-2024-57930

Kernel

Fixed versions: 6.1.124, 6.6.70, 6.12.9

Complete source record
{
  "id": "8f082794a402ee9c8a0c42d42e2588df8564bfa5ebf6a3aac35a283b8885efda",
  "url": "https://osv.dev/vulnerability/CVE-2024-57930",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tracing: Have process_string() also allow arrays",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tracing: Have process_string() also allow arrays In order to catch a common bug where a TRACE_EVENT() TP_fast_assign() assigns an address of an allocated string to the ring buffer and then references it in TP_printk(), which can be executed hours later when the string is free, the function test_event_printk() runs on all events as they are registered to make sure there's no unwanted dereferencing. It calls process_string() to handle cases in TP_printk() format that has \"%s\". It returns whether or not the string is safe. But it can have some false positives. For instance, xe_bo_move() has: TP_printk(\"move_lacks_source:%s, migrate object %p [size %zu] from %s to %s device_id:%s\", __entry->move_lacks_source ? \"yes\" : \"no\", __entry->bo, __entry->size, xe_mem_type_to_name[__entry->old_placement], xe_mem_type_to_name[__entry->new_placement], __get_str(device_id)) Where the \"%s\" references into xe_mem_type_to_name[]. This is an array of pointers that should be safe for the event to access. Instead of flagging this as a bad reference, if a reference points to an array, where the record field is the index, consider it safe.",
    "evidence": "osv:CVE-2024-57930",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.124",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.70",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-57930",
      "aliases": [
        "CVE-2024-57930"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
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                }
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            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2f6ad0b613cd45cca48e6eb04f65351db018afb0"
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            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "65a25d9f7ac02e0cf361356e834d1c71d36acca9"
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              ]
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          ],
          "versions": [
            "v6.1.123",
            "v6.1.122",
            "v6.6.69",
            "v6.6.68",
            "v6.12.8",
            "v6.12.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57930.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.122"
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                {
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            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.6.68"
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                {
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.12.7"
                },
                {
                  "fixed": "6.12.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57930.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.007099004Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3bcdc9039a6e9e6e47ed689a37b8d57894a3c571",
        "https://git.kernel.org/stable/c/631b1e09e213c86d5a4ce23d45c81af473bb0ac7",
        "https://git.kernel.org/stable/c/92bd18c74624e5eb9f96e70076aa46293f4b626f",
        "https://git.kernel.org/stable/c/a64e5295ebc4afdefe69cdf16cc286a60ff8ba4b",
        "https://git.kernel.org/stable/c/afc6717628f959941d7b33728570568b4af1c4b8",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57930.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-57930",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57930.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-57930",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 519130,
  "published_at": "2025-01-21T12:01:27.807+00:00"
}