CVE-2026-99232

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/syscalls: Use copy_from_user for the faultable syscall buffer syscall_copy_user_array() copies the buffer argument of faultable syscalls (write, pwrite64, ...) with __copy_from_user(), which skips access_ok(). Use copy_from_user() instead so a non-user address is rejected and the entry is recorded as faulted. It could be a security concern for machines that trust perf a bit too much.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-11-02 16:17:48.247000

Last modified

2026-11-02 16:17:48.247000

View original CVE JSON

{
  "id": "CVE-2026-99232",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-11-02T16:17:48.247",
  "lastModified": "2026-11-02T16:17:48.247",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/syscalls: Use copy_from_user for the faultable syscall buffer\n\nsyscall_copy_user_array() copies the buffer argument of faultable\nsyscalls (write, pwrite64, ...) with __copy_from_user(), which skips\naccess_ok(). Use copy_from_user() instead so a non-user address is\nrejected and the entry is recorded as faulted.\n\nIt could be a security concern for machines that trust perf a bit too\nmuch."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "kernel/trace/trace_syscalls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "baa031b7bd2ce7502339174a42974321859ecd6a",
              "lessThan": "e33e2718c62a602001ab549642a1aed0be797105",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "baa031b7bd2ce7502339174a42974321859ecd6a",
              "lessThan": "041d1a568a11a7ed7415ef1408d0c65041c1ad69",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "kernel/trace/trace_syscalls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.19",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.14",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3.1",
              "lessThanOrEqual": "7.3.*",
              "versionType": "semver",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/041d1a568a11a7ed7415ef1408d0c65041c1ad69",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e33e2718c62a602001ab549642a1aed0be797105",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}