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tracing: Fix overflow in get_free_elt()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".

Announced Source revision 1
Original source ↗

CVE-2024-43890

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-2024-43890

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": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "302ceb625d7b990db205a15e371f9a71238de91c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "eb223bf01e688dfe37e813c8988ee11c8c9f8d0a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "cd10d186a5409a1fe6e976df82858e9773a698da",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "788ea62499b3c18541fd6d621964d8fafbc4aec5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "a172c7b22bc2feaf489cfc6d6865f7237134fdf8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "236bb4690773ab6869b40bedc7bc8d889e36f9d6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "08d43a5fa063e03c860f2f391a30c388bcbc948e",
        "lessThan": "bcf86c01ca4676316557dd482c8416ece8c2e143",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "kernel/trace/tracing_map.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.19.320",
        "versionType": "semver",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.282",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.224",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.165",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.105",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.46",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.10.5",
        "versionType": "semver",
        "lessThanOrEqual": "6.10.*"
      },
      {
        "status": "unaffected",
        "version": "6.11",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "kernel/trace/tracing_map.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-43890

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26697 · Revision 1
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Publisher date
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