{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-50078",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50078",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-06-18T11:02:21.119Z",
    "updatedAt": "2026-05-11T19:12:26.324Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "tracing/eprobes: Do not allow eprobes to use $stack, or % for regs",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/eprobes: Do not allow eprobes to use $stack, or % for regs\n\nWhile playing with event probes (eprobes), I tried to see what would\nhappen if I attempted to retrieve the instruction pointer (%rip) knowing\nthat event probes do not use pt_regs. The result was:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000024\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP PTI\n CPU: 1 PID: 1847 Comm: trace-cmd Not tainted 5.19.0-rc5-test+ #309\n Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01\nv03.03 07/14/2016\n RIP: 0010:get_event_field.isra.0+0x0/0x50\n Code: ff 48 c7 c7 c0 8f 74 a1 e8 3d 8b f5 ff e8 88 09 f6 ff 4c 89 e7 e8\n50 6a 13 00 48 89 ef 5b 5d 41 5c 41 5d e9 42 6a 13 00 66 90 <48> 63 47 24\n8b 57 2c 48 01 c6 8b 47 28 83 f8 02 74 0e 83 f8 04 74\n RSP: 0018:ffff916c394bbaf0 EFLAGS: 00010086\n RAX: ffff916c854041d8 RBX: ffff916c8d9fbf50 RCX: ffff916c255d2000\n RDX: 0000000000000000 RSI: ffff916c255d2008 RDI: 0000000000000000\n RBP: 0000000000000000 R08: ffff916c3a2a0c08 R09: ffff916c394bbda8\n R10: 0000000000000000 R11: 0000000000000000 R12: ffff916c854041d8\n R13: ffff916c854041b0 R14: 0000000000000000 R15: 0000000000000000\n FS:  0000000000000000(0000) GS:ffff916c9ea40000(0000)\nknlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000024 CR3: 000000011b60a002 CR4: 00000000001706e0\n Call Trace:\n  <TASK>\n  get_eprobe_size+0xb4/0x640\n  ? __mod_node_page_state+0x72/0xc0\n  __eprobe_trace_func+0x59/0x1a0\n  ? __mod_lruvec_page_state+0xaa/0x1b0\n  ? page_remove_file_rmap+0x14/0x230\n  ? page_remove_rmap+0xda/0x170\n  event_triggers_call+0x52/0xe0\n  trace_event_buffer_commit+0x18f/0x240\n  trace_event_raw_event_sched_wakeup_template+0x7a/0xb0\n  try_to_wake_up+0x260/0x4c0\n  __wake_up_common+0x80/0x180\n  __wake_up_common_lock+0x7c/0xc0\n  do_notify_parent+0x1c9/0x2a0\n  exit_notify+0x1a9/0x220\n  do_exit+0x2ba/0x450\n  do_group_exit+0x2d/0x90\n  __x64_sys_exit_group+0x14/0x20\n  do_syscall_64+0x3b/0x90\n  entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nObviously this is not the desired result.\n\nMove the testing for TPARG_FL_TPOINT which is only used for event probes\nto the top of the \"$\" variable check, as all the other variables are not\nused for event probes. Also add a check in the register parsing \"%\" to\nfail if an event probe is used.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7491e2c442781a1860181adb5ab472a52075f393",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba53c21ce9773743b8e0a8ada048c96ff2d55c67"
            },
            {
              "version": "7491e2c442781a1860181adb5ab472a52075f393",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7c262114a576d94c0ced80e232bbb17391a55908"
            },
            {
              "version": "7491e2c442781a1860181adb5ab472a52075f393",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2673c60ee67e71f2ebe34386e62d348f71edee47"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "5.15.63",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.19.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}