CVE-2023-53557 (GCVE-0-2023-53557)
Vulnerability from cvelistv5
Published
2025-10-04 15:17
Modified
2025-10-04 15:17
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fprobe: Release rethook after the ftrace_ops is unregistered While running bpf selftests it's possible to get following fault: general protection fault, probably for non-canonical address \ 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI ... Call Trace: <TASK> fprobe_handler+0xc1/0x270 ? __pfx_bpf_testmod_init+0x10/0x10 ? __pfx_bpf_testmod_init+0x10/0x10 ? bpf_fentry_test1+0x5/0x10 ? bpf_fentry_test1+0x5/0x10 ? bpf_testmod_init+0x22/0x80 ? do_one_initcall+0x63/0x2e0 ? rcu_is_watching+0xd/0x40 ? kmalloc_trace+0xaf/0xc0 ? do_init_module+0x60/0x250 ? __do_sys_finit_module+0xac/0x120 ? do_syscall_64+0x37/0x90 ? entry_SYSCALL_64_after_hwframe+0x72/0xdc </TASK> In unregister_fprobe function we can't release fp->rethook while it's possible there are some of its users still running on another cpu. Moving rethook_free call after fp->ops is unregistered with unregister_ftrace_function call.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5b0ab78998e32564a011b14c4c7f9c81e2d42b9d
Version: 5b0ab78998e32564a011b14c4c7f9c81e2d42b9d
Version: 5b0ab78998e32564a011b14c4c7f9c81e2d42b9d
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/fprobe.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ce3ec57faff559ccae1e0150c1f077eb2df648a4",
              "status": "affected",
              "version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d",
              "versionType": "git"
            },
            {
              "lessThan": "03d63255a5783243c110aec5e6ae2f1475c3be76",
              "status": "affected",
              "version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d",
              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/fprobe.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "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": "6.1.40",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.5",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfprobe: Release rethook after the ftrace_ops is unregistered\n\nWhile running bpf selftests it\u0027s possible to get following fault:\n\n  general protection fault, probably for non-canonical address \\\n  0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI\n  ...\n  Call Trace:\n   \u003cTASK\u003e\n   fprobe_handler+0xc1/0x270\n   ? __pfx_bpf_testmod_init+0x10/0x10\n   ? __pfx_bpf_testmod_init+0x10/0x10\n   ? bpf_fentry_test1+0x5/0x10\n   ? bpf_fentry_test1+0x5/0x10\n   ? bpf_testmod_init+0x22/0x80\n   ? do_one_initcall+0x63/0x2e0\n   ? rcu_is_watching+0xd/0x40\n   ? kmalloc_trace+0xaf/0xc0\n   ? do_init_module+0x60/0x250\n   ? __do_sys_finit_module+0xac/0x120\n   ? do_syscall_64+0x37/0x90\n   ? entry_SYSCALL_64_after_hwframe+0x72/0xdc\n   \u003c/TASK\u003e\n\nIn unregister_fprobe function we can\u0027t release fp-\u003erethook while it\u0027s\npossible there are some of its users still running on another cpu.\n\nMoving rethook_free call after fp-\u003eops is unregistered with\nunregister_ftrace_function call."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-04T15:17:02.077Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ce3ec57faff559ccae1e0150c1f077eb2df648a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/03d63255a5783243c110aec5e6ae2f1475c3be76"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f81018753dfd4989e33ece1f0cb6b8aae498b82"
        }
      ],
      "title": "fprobe: Release rethook after the ftrace_ops is unregistered",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53557",
    "datePublished": "2025-10-04T15:17:02.077Z",
    "dateReserved": "2025-10-04T15:14:15.923Z",
    "dateUpdated": "2025-10-04T15:17:02.077Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53557\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-04T16:15:51.050\",\"lastModified\":\"2025-10-06T14:56:21.733\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfprobe: Release rethook after the ftrace_ops is unregistered\\n\\nWhile running bpf selftests it\u0027s possible to get following fault:\\n\\n  general protection fault, probably for non-canonical address \\\\\\n  0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI\\n  ...\\n  Call Trace:\\n   \u003cTASK\u003e\\n   fprobe_handler+0xc1/0x270\\n   ? __pfx_bpf_testmod_init+0x10/0x10\\n   ? __pfx_bpf_testmod_init+0x10/0x10\\n   ? bpf_fentry_test1+0x5/0x10\\n   ? bpf_fentry_test1+0x5/0x10\\n   ? bpf_testmod_init+0x22/0x80\\n   ? do_one_initcall+0x63/0x2e0\\n   ? rcu_is_watching+0xd/0x40\\n   ? kmalloc_trace+0xaf/0xc0\\n   ? do_init_module+0x60/0x250\\n   ? __do_sys_finit_module+0xac/0x120\\n   ? do_syscall_64+0x37/0x90\\n   ? entry_SYSCALL_64_after_hwframe+0x72/0xdc\\n   \u003c/TASK\u003e\\n\\nIn unregister_fprobe function we can\u0027t release fp-\u003erethook while it\u0027s\\npossible there are some of its users still running on another cpu.\\n\\nMoving rethook_free call after fp-\u003eops is unregistered with\\nunregister_ftrace_function call.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/03d63255a5783243c110aec5e6ae2f1475c3be76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5f81018753dfd4989e33ece1f0cb6b8aae498b82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce3ec57faff559ccae1e0150c1f077eb2df648a4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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