CVE-2023-54171 (GCVE-0-2023-54171)
Vulnerability from cvelistv5
Published
2025-12-30 12:08
Modified
2025-12-30 12:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix memory leak of iter->temp when reading trace_pipe kmemleak reports: unreferenced object 0xffff88814d14e200 (size 256): comm "cat", pid 336, jiffies 4294871818 (age 779.490s) hex dump (first 32 bytes): 04 00 01 03 00 00 00 00 08 00 00 00 00 00 00 00 ................ 0c d8 c8 9b ff ff ff ff 04 5a ca 9b ff ff ff ff .........Z...... backtrace: [<ffffffff9bdff18f>] __kmalloc+0x4f/0x140 [<ffffffff9bc9238b>] trace_find_next_entry+0xbb/0x1d0 [<ffffffff9bc9caef>] trace_print_lat_context+0xaf/0x4e0 [<ffffffff9bc94490>] print_trace_line+0x3e0/0x950 [<ffffffff9bc95499>] tracing_read_pipe+0x2d9/0x5a0 [<ffffffff9bf03a43>] vfs_read+0x143/0x520 [<ffffffff9bf04c2d>] ksys_read+0xbd/0x160 [<ffffffff9d0f0edf>] do_syscall_64+0x3f/0x90 [<ffffffff9d2000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 when reading file 'trace_pipe', 'iter->temp' is allocated or relocated in trace_find_next_entry() but not freed before 'trace_pipe' is closed. To fix it, free 'iter->temp' in tracing_release_pipe().
References
Impacted products
Vendor Product Version
Linux Linux Version: ff895103a84abc85a5f43ecabc7f67cf36e1348f
Version: ff895103a84abc85a5f43ecabc7f67cf36e1348f
Version: ff895103a84abc85a5f43ecabc7f67cf36e1348f
Version: ff895103a84abc85a5f43ecabc7f67cf36e1348f
Version: ff895103a84abc85a5f43ecabc7f67cf36e1348f
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace.c"
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        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5.7"
            },
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              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.188",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.121",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.40",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.5",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix memory leak of iter-\u003etemp when reading trace_pipe\n\nkmemleak reports:\n  unreferenced object 0xffff88814d14e200 (size 256):\n    comm \"cat\", pid 336, jiffies 4294871818 (age 779.490s)\n    hex dump (first 32 bytes):\n      04 00 01 03 00 00 00 00 08 00 00 00 00 00 00 00  ................\n      0c d8 c8 9b ff ff ff ff 04 5a ca 9b ff ff ff ff  .........Z......\n    backtrace:\n      [\u003cffffffff9bdff18f\u003e] __kmalloc+0x4f/0x140\n      [\u003cffffffff9bc9238b\u003e] trace_find_next_entry+0xbb/0x1d0\n      [\u003cffffffff9bc9caef\u003e] trace_print_lat_context+0xaf/0x4e0\n      [\u003cffffffff9bc94490\u003e] print_trace_line+0x3e0/0x950\n      [\u003cffffffff9bc95499\u003e] tracing_read_pipe+0x2d9/0x5a0\n      [\u003cffffffff9bf03a43\u003e] vfs_read+0x143/0x520\n      [\u003cffffffff9bf04c2d\u003e] ksys_read+0xbd/0x160\n      [\u003cffffffff9d0f0edf\u003e] do_syscall_64+0x3f/0x90\n      [\u003cffffffff9d2000aa\u003e] entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nwhen reading file \u0027trace_pipe\u0027, \u0027iter-\u003etemp\u0027 is allocated or relocated\nin trace_find_next_entry() but not freed before \u0027trace_pipe\u0027 is closed.\n\nTo fix it, free \u0027iter-\u003etemp\u0027 in tracing_release_pipe()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:08:45.441Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1a1e793e021d75cd0accd8f329ec9456e5cd105e"
        },
        {
          "url": "https://git.kernel.org/stable/c/954792db9f61b6c0b8a94b8831fed5f146014029"
        },
        {
          "url": "https://git.kernel.org/stable/c/be970e22c53d5572b2795b79da9716ada937023b"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f42d57a76e7e96585f08855554e002218cbca0c"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5a821896360cc8b93a15bd888fabc858c038dc0"
        }
      ],
      "title": "tracing: Fix memory leak of iter-\u003etemp when reading trace_pipe",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54171",
    "datePublished": "2025-12-30T12:08:45.441Z",
    "dateReserved": "2025-12-30T12:06:44.496Z",
    "dateUpdated": "2025-12-30T12:08:45.441Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54171\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:04.940\",\"lastModified\":\"2025-12-30T13:16:04.940\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntracing: Fix memory leak of iter-\u003etemp when reading trace_pipe\\n\\nkmemleak reports:\\n  unreferenced object 0xffff88814d14e200 (size 256):\\n    comm \\\"cat\\\", pid 336, jiffies 4294871818 (age 779.490s)\\n    hex dump (first 32 bytes):\\n      04 00 01 03 00 00 00 00 08 00 00 00 00 00 00 00  ................\\n      0c d8 c8 9b ff ff ff ff 04 5a ca 9b ff ff ff ff  .........Z......\\n    backtrace:\\n      [\u003cffffffff9bdff18f\u003e] __kmalloc+0x4f/0x140\\n      [\u003cffffffff9bc9238b\u003e] trace_find_next_entry+0xbb/0x1d0\\n      [\u003cffffffff9bc9caef\u003e] trace_print_lat_context+0xaf/0x4e0\\n      [\u003cffffffff9bc94490\u003e] print_trace_line+0x3e0/0x950\\n      [\u003cffffffff9bc95499\u003e] tracing_read_pipe+0x2d9/0x5a0\\n      [\u003cffffffff9bf03a43\u003e] vfs_read+0x143/0x520\\n      [\u003cffffffff9bf04c2d\u003e] ksys_read+0xbd/0x160\\n      [\u003cffffffff9d0f0edf\u003e] do_syscall_64+0x3f/0x90\\n      [\u003cffffffff9d2000aa\u003e] entry_SYSCALL_64_after_hwframe+0x6e/0xd8\\n\\nwhen reading file \u0027trace_pipe\u0027, \u0027iter-\u003etemp\u0027 is allocated or relocated\\nin trace_find_next_entry() but not freed before \u0027trace_pipe\u0027 is closed.\\n\\nTo fix it, free \u0027iter-\u003etemp\u0027 in tracing_release_pipe().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1a1e793e021d75cd0accd8f329ec9456e5cd105e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f42d57a76e7e96585f08855554e002218cbca0c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/954792db9f61b6c0b8a94b8831fed5f146014029\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/be970e22c53d5572b2795b79da9716ada937023b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d5a821896360cc8b93a15bd888fabc858c038dc0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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